how do you find average velocity (vaverage) from acceleration (a) and time (t)?
Answers
Answer:
1) Average velocities:
Given the magnitudes of 2 velocity vectors, in different time instants, the average velocity is defined as the difference of the 2 velocity magnitudes, in absolute value, divided by the interval of time occuring between the measurement of the velocity magnitudes.
2) Average acceleration
Given the magnitudes of 2 acceleration vectors, in different time instants, the average acceleration is defined as the difference of the 2 acceleration magnitudes, in absolute value, divided by the interval of time occuring between the measurement of the acceleration magnitudes.
As you see the definitions are pretty similar.
Note: I didn't copy-paste this answers from any other site.
Related Questions
Steve races to the nearest taco stand at lunchtime and sees that his pedometer recorded his peak speed at 67.3 cm/s. What was Steve's peak speed in kilometers per hour
Answers
The peak speed of Steve races in kilometer per hour is 2.423 km/h.
What is peak speed?Peak speed is the maximum change in the distance traveled by an object over a period of time.
The given peak speed;
V = 67.3 cm/s
The peak speed is converted to kilometer per hour as follows;
\(v = 67.3 \ \frac{cm}{s} \times \frac{1 \ m}{100 \ cm} \times \frac{1 km}{1000 \ m} \times \frac{3600 \ s}{1 \ hour} \\\\ v = 2.423 \ km/h\)
Thus, the peak speed of Steve races in kilometer per hour is 2.423 km/h.
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Which of the following is not a type of friction
a
static
b
sliding
c
rolling
d
fluid
e
gravitational
Answers
Answer:
Fluid (d).
Explanation:
When there is fluid, there can't be friction.
A box is being dragged across the floor at a constant speed by a rope pulling horizontally on it. Friction is not negligible.
Answers
A box is being dragged across the floor at a constant speed by a rope pulling horizontally on it. friction is not negligible. Weight (W), the normal force( N), and the tension force( T )in the string will all be forces operating on the box.
How does tension force work?The force transmitted through a rope, string, or wire while opposing forces pull it is referred to as the tension force.
Energy is drawn equally from both ends by the tension force, which is exerted along the entire length of the wire.
A box is being dragged across the floor at a constant speed by a horizontally pulling rope. Friction has a big impact.
As a result, the weight W, normal force N, and tension force T in the string will all be acting on the box.
Your question is incomplete but most probably your full question was
A box is being dragged across the floor at a constant speed by a rope pulling horizontally on it. friction is not negligible. identify all the forces acting on the box.
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Astronomers were at first surprised to find complicated molecules in the interstellar medium. They thought ultra-violet light from stars would break apart such molecules. What protects the molecules we observe from being broken apart
Answers
Answer:
The dust present in the clouds.
Explanation:
The complicated composition molecules that can be found in space are generally associated with clouds of dust. The significant amount of dust in these clouds provides protection not only for these molecules, but for any body that makes up or is associated with dust clouds.
It is exactly this dust that protects the molecules against the action of ultraviolet rays.
What is a rumor wave ?
Answers
Answer:
Following are the answer to this question:
Explanation:
The wave is propagating at the incident wave which focuses on the stretchy and rotational inertia features of the whole medium via a material system. For both the mechanical waves there are many two basic types of incident waves: quality management program and transverse waves.
The rumor is also known as the "Norman Rockwell", in which the environment of some of the greatest physics attempts of our time, it pays to remain suspicious when remarkable reports of historical findings are made on social media.
what is the difference between skill and health related fitness
Answers
Answer:
Explanation:Health-related fitness activities can be integrated into everyday activities that are often characterized as lifetime activities. In contrast, skill-related physical fitness includes health-related components, but it also covers components related to physical performance.Health-Related components are those components that contribute to the development of health and functional capacity of the body such as cardiovascular endurance & strength, muscular endurance & strength, flexibility and body composition, while skill-related components of physical fitness are components that contribute
objects 1 and 2 have the same momentum. object 1 can have more kinetic energy than object 2 if, compared with object 2, it a has more mass b has the same mass c is moving at the same speed d is moving slower e is moving faster related content
Answers
Objects 1 and object 2 have the same momentum. Object 1 will have greater kinetic energy if it is moving faster than object 2 (option e)
The formula for the momentum is:
P = m v
Where:
m = mass
v = velocity
The formula for the kinetic energy is:
Ek = 1/2 x mv²
Object 1 and object 2 has the same momentum, hence
m₁v₁ = m₂v₂ = P
In term of P, the kinetic energy can be written as:
Ek = 1/2 x mv²
= 1/2 x mv x v = 1/2 x P x v
Since P has the same value for object 1 and object 2, object 1 can have more kinetic energy if its speed or velocity is greater than the object 2's speed. Hence, the correct option is (e) object 1 is moving faster.
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An air-track glider of mass 0.25 kg moving at 0.60 m/s collides with and sticks to a glider of mass 0.50 kg at rest. How much kinetic energy is converted into other forms of energy as a direct result of this collision?
Answers
Answer:
0.03 Joules have been converted into other forms of energy as the direct result of the collision.
Explanation:
Let's start studying the conservation of momentum for the system:
\(P_i=P_f\\(0.25\,kg)\,{0.6\,m/s)+(0.5\,kg)\,(0\,m/s)=(0.25\,kg+0.5\,kg)\, v_f \\\\\\ 0.15\,kg\,m/s=0.75\,kg\,\,v_f\\v_f=0.15/0.75\,\,m/s\\v_f=0.2\,\,m/s\)
Now that we know the speed of the newly created object, we can calculate how the final kinetic energy differs from the initial one:
\(K_i=\frac{1}{2} (0.25)\,(0.6)^2+\frac{1}{2} (0.5)\,(0)^2=0.045\,\,J\\ \\K_f=\frac{1}{2} (0.75)\,(0.2)^2=0.015\,\,J\\\)
Then, when we subtract one from the other, we can estimate how much kinetic energy has been converted into other forms of energy in the collision:
0.045 J - 0.015 J = 0.03 J
What is the surface area if the shape?
Answers
Explanation:
Fourteen yard (14) yard
Your GPS shows that your friend’s house is 10.0 km away. But there is a big hill between your houses and you don’t want to bike there directly. You know your friend’s street is 6.0 km north of your street. How far do you have to ride before turning north to get to your friend’s house?
Answers
Answer:
The value is \(c = 8 \ km \)
Explanation:
From the question we are told that
The distance of friends house from your point is \(a = 10 \ km\)
The distance of your friends street from your street is \(b = 6 \ km \ in the \ direction \ towards \ the \ north\)
The diagram illustrating this question is shown on the first uploaded image
From the diagram we can apply by Pythagoras theorem as follows
\(a^2 = b^2 + c^2\)
=> \(c = \sqrt{^2 - b^2}\)
=> \(c = \sqrt{ 10^2 - 6^2}\)
=> \(c = 8 \ km \)
By applying Pythagorean's theorem, you would have to ride a distance of 8 km before turning North, in order to get to your friend’s house.
How to determine the distance?In order to determine the amount of distance that you would have to ride before turning North, we would apply Pythagorean's theorem.
From the question, we can deduce the following points:
Your friend’s house is the hypotenuse of the right-angle triangle (10.0 km).Your friend’s street is opposite (North) your street (opposite of the right-angle triangle) i.e 6.0 kmThus, we would have to find the adjacent side of the right-angle triangle.
Mathematically, Pythagorean's theorem is given by this formula:
x² + y² = z²
6² + y² = 10²
36 + y² = 100
y² = 100 - 36
y = √64
y = 8 km.
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Draw a diagram to show what we mean by the angle of incidence and the angle of refraction for a refracted ray of light
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mark me as brainlist
Suppose the velocity of an object moving along a line is positive. are position, displacement, and distance traveled equal? explain. my math lab
Answers
No, the object's displacement and distance traveled will be equal; however, because the object's initial position is unknown, the object's position may differ from its displacement and distance traveled.
Because the initial position is not provided, we cannot assert that the displacement or distance equals the position. We might have arrived at a different conclusion if the starting point had been zero, because the distance from zero equals the position.
What precisely do you mean by position, displacement, and distance?
The location of an object (whether a person, a ball, or a particle) at a given point in time is referred to as its position. The displacement of an object is the difference in its position from one time to the next. Distance is the total amount the object has traveled in a certain period of time.
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A train was moving along east at 25 m/s, but brakes for 3 seconds, reducing its velocity to 13 m/s east.
What was its displacement while braking?
Answers
Answer:
57 m
Explanation:
Given:
v₀ = 25 m/s
v = 13 m/s
t = 3 s
FInd: Δx
Δx = ½ (v + v₀) t
Δx = ½ (13 m/s + 25 m/s) (3 s)
Δx = 57 m
Consider a beaker with two holes X and Y near the base, such that hole X is ABOVE hole Y. The holes are closed with water-resistant tape and the beaker is filled with water.
Both the holes are then uncovered at the same time. If water from hole X comes out in a stream that touches the ground at a distance of 5 cm away from the beaker, how far from the beaker will the stream from hole Y touch the ground?
1. exactly 5 cm
2. less than 5 cm
3. more than 5 cm
4. (It will be more or less than 5 cm depending on the distance between the two holes.)
Answers
As the height of the hole increases, the velocity of the stream increases, results in a higher distance from the beaker. Therefore, the distance of the stream from the hole Y will be less than that from X thus, less than 5 cm is correct.
What is stream speed ?The speed of stream can be determined using the height and acceleration due to gravity g. We can use the equation for velocity using the parameters g and h.
v = √2gh
Therefore, as the height h increases, v increases.
Similarly the distance s = vt
therefore, the distance increases with v.
Here, the hole x is above the hole Y. Then the stream from X will have the greater speed and it covers greater distance (5 cm )from the beaker. Stream from Y slow compared to that in X hence covers a distance less than 5 cm. Hence, option 2 is correct.
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C. Wnat are the causes of power frequency interference in ECG recording? [2 marks] D. What are the limitations of a sphygmomanometer? [2 marks]
Answers
Power frequency interference in ECG recording can be caused by a variety of external sources. It can be generated by electrical motors, transformers, spark gaps, electrical wiring, and fluorescent lights typically found in clinical settings.
The limitations of a sphygmomanometer is inaccuracy and use error.
Power frequency interference is also created by electric utilities, such as electrical lines, generating stations, and telecommunication systems. Even defibrillators and pacemakers can generate power frequency interference, if not properly shielded. The sphygmomanometer is primarily used to measure a patient’s blood pressure, which is an indication of the force of the circulating blood against the walls of the arteries.
This device utilizes an inflatable cuff and a manometer, or pressure gauge, to measure the patient’s systolic and diastolic blood pressures. The accuracy of the sphygmomanometer readings is dependent on the skill and experience of the user, as incorrect cuff size and improper inflation and deflation techniques will produce inaccurate results.
In addition to this, sudden changes in a person’s blood pressure or movement can also cause inaccurate readings. Lastly, sphygmomanometers cannot detect changes in blood viscosity, and will not provide readings for arterial-venous evaluations.
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Pls I need help ASAP
Answers
Answer:
i dont undertsnad what do u ned hep wit?
Explanation:
Compressed gases aren't ideal. Let's consider a gas that's non-ideal only because the volume available to each of the N molecules is reduced because each other molecule occupies volume v. Instead of pV=NkT, we get: p(V-Nb)=NkT. Let b=7 × 10^-29 m3. Let's look at 3 moles of this gas at T=300K starting in 0.001 m3 volume
Answers
Work done is given by
dw=Pdv, w=∫₁²(NkT/V-Nb)dv
The amount of work is 5708.00923 J.
What sort of moles are cancerous?border that is erroneous Frequently, the edges are jagged, serrated, or blurry in outline. It's possible for the pigment to penetrate the nearby skin. unbalanced color: There could be various tones of tan, brown, and black. There may also be white, black, red, pink, and blue patches.
What is the quickest method for eliminating moles?Using traps or bait with in spring or fall will increase your chances of successfully eliminating moles from your yard. The primary runway, or active runway, should be used for both goods. Usually, these are the vertical tunnels in your grass or the ones that round the outside of your property.
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The xylem tube which transports sap to the top of a tree can be considered as uniform cylinders if the transport of sap is entirely due to capillarity determine the diameter of the tube which will move the sap up a tree which is 25m tall.take the surface tension of sap to be 5*10^-2 s.g is 1 g is 9.8 an
Answers
The wide wood pores that link to the tree's roots allow sap to be drawn up into the maple tree when it starts to freeze. The tree is really replenishing itself with fluids at this time from its roots.
As long as the temperature is below freezing and the sap is increasing, the process continues.
How does the xylem sap of tall trees go from the roots to the top?Water is drawn up from the roots to the top of the plant according to the cohesion-tension hypothesis of sap ascent. Water and minerals travel upward from the roots through the xylem due to a negative water potential gradient created by the evaporation of mesophyll cells in the leaves.
The water potential gets increasingly negative as you climb the tree, and these variations provide a pull or tension that causes the water to ascend the tree. The loss of water from the leaves through a process called transpiration is a crucial element in the draw of water up the tree.
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How many week are in .62 years?
Answers
Answer:
32.32857
Explanation:
Searched on the web
*What are cyclones? How are they formed?
*Explain the structure of a cyclone.
Answers
Answer:
To form a cyclone, warm, moist air over the ocean rises upward from near the surface. As this air moves up and away from the ocean surface, it leaves is less air near the surface. So basically as the warm air rises, it causes an area of lower air pressure below.
The main parts of a tropical cyclone are the rainbands, the eye, and the eyewall. Air spirals in toward the center in a counter-clockwise pattern in the northern hemisphere (clockwise in the southern hemisphere), and out the top in the opposite direction.
Hope this helps, have a great day/night, and stay safe!
why is the fact that the universe has a temperature of 2.73k inconsistent with the steady state model?
Answers
The fact that the universe has a temperature of 2.73K is inconsistent with the steady state model because this model posits that the universe has always existed in a steady state without any significant changes.
The temperature of the universe indicates that there was a time in the past when it was much hotter and denser. This is because the temperature of the universe is a remnant of the Big Bang, which is the prevailing theory of the origin of the universe.
However, the presence of the CMB radiation, and its temperature of 2.73K, provides evidence of the universe's early hot and dense state, supporting the Big Bang model. The observed temperature contradicts the steady state model's assumption of an unchanging universe.
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1. Define the following terms giving appropriate examples. (4mks)
a) Magnetic materials-
b) Non-magnetic materials-
Answers
Answer: Those materials which are not attracted by a magnet are called non- magnetic materials. All the substances other than iron, nickel, and Cobalt are non-magnetic substances for example plastic, rubber, water, etc are nonmagnetic materials. Non-magnetic substances cannot be magnetized.
Explanation: The materials which get attracted towards a magnet are magnetic – for example, iron, nickel or cobalt. The materials which are not attracted towards a magnet are non-magnetic materials. Examples of non-magnetic materials include rubber, coins, feather and leather.
describe how we can use the orbital characteristics of stars at many distances fromthe galactic center to determine the distribution of mass in the milky way, and describe how this has led to the discovery of dark matter in our galaxy
Answers
Consequently, by using the orbital velocity law to calculate the stars' orbits at various distances from galactic center,
What is milky way?The Solar System's home galaxy, known as the Milky Way, takes its name from how it looks in the night sky from Earth: as a hazy band of light made consisting of stars which are too near to one another to be viewed separately. One of the many billions of galaxies in the cosmos is the Milky Way galaxy. The universe is a large region of space that houses everything that has ever existed.
How long will the Milky Way survive?The Milky Way, which houses the Solar System and Earth, and the Andromeda Galaxy are anticipated to collide in roughly 4.5 billion years. This galactic collision will take between the two largest galaxies in the Local Group.
Briefing:Therefore, we may estimate how much of the galaxy's mass is contained inside each radius by applying its orbital velocity laws to a orbits of stars at various distances from galactic center. Overall distribution of a mass mostly in Milky Way can then be determined by plotting the galaxy's mass as just a function of radius.
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PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (80pts)
Answers
Answer:
HOPEFULLY i am correct but i say its D. Hopefully I helped!✨
Answer: It can be A or B
Explanation: In physics, motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time.
a camel can walk easily on sandy desert but a horse cannot, why?
plz anyone tell
Answers
Answer:
I believe the camels hooves or whatever are built diffrenet.
Explanation:
If the velocity of a car is 44 m/s west, how far can it travel in 0.80 hours?
Answers
Answer:
try typing this into brainly. i just took my phyics exam and i think that was one i found
name atleast two avantages of using models in sciece
Answers
The main advantage of using models in science is the chance to predict a given outcome and make new predictions.
What are scientific models?The expression 'scientific models' makes reference to all advancements associated with the use of scientific claims, especially scientific theories that are well sustained by empirical evidence and the chance to prove these claims before their usage.
The scientific advantages are mainly associated with the possibility to predict the result of phenomena from the real world, which also allows for making new predictions.
In conclusion, the main advantage of using models in science is the chance to predict a given outcome and make new predictions.
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65) What is the average translational kinetic energy of an ideal gas at The Boltzmann constant is 1.38 × 10-23 J/K.
A) 1.70 x 10-20 J
B) 5.65 x 10-21 J
C) 1.13 x 10-17 J
D) 3.77 x 10-19 J
Answers
The average translational kinetic energy of an ideal gas at 297 K is 1.70 x \(10^{20}\) J.
What is Kinetic Energy?
Kinetic energy is the energy that an object possesses due to its motion. It is a scalar quantity that depends on the mass and velocity of the object. The formula for kinetic energy is KE = 1/2 m\(v^{2}\), where KE is kinetic energy, m is the mass of the object, and v is its velocity.
The average translational kinetic energy of an ideal gas is given by the equation:
KE = (3/2) kT
where KE is the average kinetic energy, k is the Boltzmann constant, and T is the absolute temperature.
Substituting k = 1.38 × \(10^{-23}\) J/K, we get:
KE = (3/2) × 1.38 × \(10^{-23}\) J/K × T
Rearranging, we get:
T = (2/3) KE / (1.38 × 10^-23 J/K)
Substituting KE = 1.70 × \(10^{20}\) J, we get:
T = (2/3) × 1.70 × \(10^{-20}\) J / (1.38 × \(10^{-23}\)J/K) = 297 K
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The chart indicates the time, speed, and velocity of five runners.
A 4-column table with 5 rows. The first column labeled runner has entries Garreth, Luigi, Elisa, Jasmine, Logan. The second column labeled total time has entries 45 minutes, 35 minutes, 40 minutes, 35 minutes, 35 minutes. The third column labeled speed has entries 6.2 miles per hour, 5.0 miles per hour, 6.2 miles per hour, 5.0 miles per hour, 5.6 miles per hour. The fourth column labeled velocity has entries 5.5 miles per hour west, 4.3 miles per hour east, 5.5 miles per hour west, 4.0 miles per hour south, 4.0 miles per hour north.
Which best describes the runners?
Garreth and Elisa ran the same distance but not the same displacement, Luigi and Jasmine went the same displacement, and Logan ran faster than Jasmine.
Garreth ran farther than Luigi, Elisa and Jasmine went the same distance, and Logan and Jasmine has the same displacement in the opposite direction.
Garreth and Elisa ran together, Luigi and Jasmine went the same distance, and Logan and Jasmine have the same displacement in the opposite direction.
Garreth ran less than Logan, Elisa and Jasmine went the same displacement, and Luigi and Garreth ran together.
Answers
According to the information provided, Garreth outperformed Luigi in terms of distance traveled, Elisa and Jasmine covered the same ground, and Logan outpaced Jasmine in terms of speed.
Additionally, even though Garreth and Elisa covered the same distance, their displacements may have been different. Luigi and Jasmine also experienced the same displacement, while Logan and Jasmine experienced it oppositely.
The following details are derived from the table: Garreth ran farther than Luigi, as evidenced by the fact that he ran quicker and for a longer period of time overall.
Logan's speed was greater than Jasmine's, indicating that he ran more quickly. Elisa, Jasmine, and Logan all had the same total time, showing that they covered the same distance.
Each runner's finishing time is shown in the "total time" column, with Garreth taking the longest (45 minutes) and Luigi taking the quickest. (35 minutes).
Each runner's average pace, expressed in miles per hour, is shown in the "speed" column. (mph). The fastest way was Garreth, who traveled at 6.2 mph, and the slowest was Luigi, who traveled at 5.0 mph.
The direction and size of the runners' displacement, or shift in position, during the race, are shown in the "velocity" column. While Luigi and Jasmine experienced an equal amount of displacement, Jasmine and Logan experienced it in opposing directions (north and south).
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What happens if the electrode and work cables come into contact with hot welding surfaces?
Answers
The electrical insulator is harmed by the heat.
What does electrical insulation serve?Electrical insulation is essential as well as important. Electrical insulation is primarily used to ensure safety and prevent electric shock. During an electric shock, involuntary movement might result in fatal consequences.
What three electrical insulators are there?A few typical insulators include wood, rubber, plastic, glass, and air.
What kind of material is most frequently used to insulate cables and wires?Silicone is a widely popular all-purpose insulating material for wiring. Depending on the quality, silicone is frequently used for high-temperature applications up to 150 or 250 degrees Celsius.
Which electrical insulation works the best?Rubber is one of the best electrical insulators for forming a barrier between conductors and controlling electric currents.
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