This object was moving at a velocity of 1.0 m/s east at the end of 4.0 seconds. Determine the average and instantaneous velocities in m/s at 6.0 seconds.
Average = 1.0 m/s east; instantaneous = 4.0 m/s east
Average = 4.0 m/s east; instantaneous = 6.0 m/s east
Average = 0.67 m/s east; instantaneous = 0 m/s
Average = 1.0 m/s east; instantaneous = 0 m/s
Answers
The average and instantaneous velocities in m/s at 8.0 seconds would be 0.5 m/s and 0 m/s respectively, therefore the correct answer is option D.
What is Velocity?
The total displacement covered by any object per unit of time is known as velocity. It depends on the magnitude as well as the direction of the moving object.
As given in the problem, this object was moving at a velocity of 1.0 m/s east at the end of 4.0 seconds.
The average velocity of the object = ( 4 - 0 ) / (8 -0)
The instantaneous velocity of the object = 0 m/s
Thus, the average and instantaneous velocities in m/s at 8.0 seconds would be 0.5 m/s and 0 m/s respectively, therefore the correct answer is option D.
Answer:
Explanation:
Answer:
Average = 0.67 m/s east; instantaneous = 0 m/s
Explanation:
took the test
Related Questions
what is a conversion factor?
Answers
Answer:
It is often necessary to convert from one unit to another. For example, if you are reading a European cookbook, some quantities may be expressed in units of liters and you need to convert them to cups. Or perhaps you are reading walking directions from one location to another and you are interested in how many miles you will be walking. In this case, you may need to convert units of feet or meters to miles.
Explanation:
Because of research
An object on Earth's surface has a mass of 18.7 kg. The object's weight is ________ N.
Answers
Answer:
The mass of an object is the same on Earth, in orbit, or on the surface of the Moon. ... the absence of air resistance, all objects fall with the same acceleration g. ... A 1.0-kg mass thus has a weight of 9.8 N on Earth and only about 1.7 N ... What force does he apply if the stone accelerates at a rate of 1.5m/s2?
Explanation:
A child hits an ice cube with a mass of 10 grams on a table with a force of 10 N. The impact lasts 0.02 seconds. The ice cube flies off the table, which is 1 meter high and lands some distance away. Assume there is no friction between the ice cube and the table. a. What is the velocity of the ice cube when it leaves the table? b. What is the final velocity of the ice cube just before it hits the floor? c. What is the momentum of the ice cube just before it hits the floor? d. What distance will the ice cube land from the foot of the table? e. Suppose the ice cube had broken into two pieces just after the child hit the ice and moved away from each other while falling to the floor. How would the total momentum of the two pieces just before they hit the floor compare to the momentum you found in part (c)?
Answers
The velocity of the ice cube when it leaves the table is 2 m/s. The final velocity of the ice cube just before it hits the floor is 4.43 m/s. The momentum of the ice cube just before it hits the floor is 0.04 kg*m/s.The ice cube will land 1.02 meters from the foot of the table.
We can use the formula for impulse to find the velocity of the ice cube when it leaves the table. Impulse is equal to force multiplied by time, which is also equal to the change in momentum of the ice cube. Since the ice cube starts from rest, its initial momentum is zero. Therefore, impulse is equal to the final momentum of the ice cube, which is mass multiplied by velocity. Solving for velocity, we get a velocity of 2 m/s.
We can use the kinematic equation v^2 = u^2 + 2as to find the final velocity of the ice cube just before it hits the floor. The initial velocity of the ice cube is 2 m/s (from part a). We know that the acceleration due to gravity is -9.8 m/s^2 and the displacement of the ice cube is 1 meter. Solving for the final velocity, we get a final velocity of 4.43 m/s.
The momentum of an object is equal to its mass multiplied by its velocity. Since the mass of the ice cube is 10 grams (or 0.01 kg) and the velocity is 4.43 m/s (from part b), the momentum of the ice cube just before it hits the floor is 0.04 kg*m/s.
We can use the kinematic equation s = ut + 1/2at^2 to find the distance the ice cube will travel horizontally before hitting the floor. Since there is no horizontal force acting on the ice cube, its initial horizontal velocity is equal to its final horizontal velocity, which is 2 m/s (from part a). We know that the time of flight of the ice cube is equal to the time of impact, which is 0.02 seconds. Solving for the horizontal displacement, we get a distance of 1.02 meters.
According to the law of conservation of momentum, the total momentum of a system before a collision is equal to the total momentum of the system after the collision, provided there are no external forces acting on the system. Therefore, if the ice cube broke into two pieces just after the child hit the ice and moved away from each other while falling to the floor, the total momentum of the two pieces just before they hit the floor would be equal to the momentum found in part (c), which is 0.04 kg*m/s.
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What fraction of chlorine-36 remains UN-decayed after 800,000 years?
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2.How does “pumping” increase a skater's acceleration?
Answers
Answer:
By raising her center of mass just at the beginning of the arc, the skater gains energy and thereby increases her speed. Pumping on a skateboard in this way is closely related to pumping on a swing.
Explanation:
I hope this helps you!
(ps: can i plz have the brainlyest answer?)
describe how a wheel and axle work?
Answers
A weally works when you pull something and a axle is something that you can push
Explanation:
I hope this helps
What does a line coming up and getting steeper represent on a distance/time graph?
Answers
_____ is a measure of the force of gravity pulling down on an object. it is measured in newtons (N), the common unit for measuring force
Answers
By definition, Weight is a measure of the force of gravity pulling down on an object. it is measured in newtons (N), the common unit for measuring force.
Weight is called the action exerted by the force of gravity on the body.
The mass (amount of matter that a body contains) of an object will always be the same, no matter where it is located. Instead, the weight of the object will vary according to the force of gravity acting on it.
The formula that allows you to calculate the weight of any body is:
P = m×g
where:
P = weight measured in N. m = mass measured in kg. g = acceleration of gravity measured in m/s². The acceleration of gravity g is the same for all objects that fall due to gravitational attraction, regardless of their size or composition. For example, as an approximate value on Earth, g = 9.8 m/s².
Then, the weight of an object is the force of gravity on the object, that is, the weight will vary according to the force of gravity that acts on it. So the correct answer is:
Weight is a measure of the force of gravity pulling down on an object. it is measured in newtons (N), the common unit for measuring force.
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brainly.com/question/15566515?referrer=searchResults brainly.com/question/15271930?referrer=searchResults brainly.com/question/4735812?referrer=searchResultsA boat is traveling upstream at 14 km/h with respect to the water of a river. The water itself is flowing at 9 km/h with respect to the ground. What is the velocity of the boat with respect to the ground
Answers
Answer:
16.64 km/h
Explanation:
Think of the x and y components as the a and b sides of a triangle and simply do the Pythagorean Theorem:
\(a^2+b^2=c^2\)
\(14^2+9^2=c^2\)
\(\sqrt{196+81}=c\)
\(\sqrt{277}=c\)
\(16.64 km/h\)
two charged particles held a certain distance apart are released. as they move, the acceleration of each decreases. therefore, their charges have____
Answers
Charges of two particles become more balanced over time as their acceleration decreases due to opposing electrostatic force.
What happens to the charges of two particles as their acceleration decreases due to opposing electrostatic force?
The decrease in acceleration of two charged particles as they move indicates that there is an opposing force acting on them, which is proportional to the magnitude of the charges. This force is known as the electrostatic force and it follows Coulomb's law, which states that the force between two charged particles is directly proportional to their charge product and inversely proportional to the square of their separation distance.
Therefore, if the acceleration of the particles is decreasing, it implies that the electrostatic force between them is also decreasing. Since the separation distance remains constant, the only explanation for the decrease in force is that the charges of the particles are becoming more similar in magnitude. Thus, we can conclude that the charges of the particles have equalized or become more balanced over time.
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Which one is it
Plz help me :)
Answers
Answer:
5 I think will be none of the above and 6 could be all of the above
Show how to balance 3 masses hanging from a force table. (There is not a fourth mass to add). The masses are 3 kg, 4 kg, and 6 kg. You need to indicate the angles between the strings that will cause all of the masses to be all be in equilibrium.
Answers
Assuming the force table is set up so that the masses are placed at the vertices of an equilateral triangle, the angles between the strings should be 60 degrees.
How to balance 3 masses hanging from a force table?This will cause all of the masses to be in equilibrium.The angles between the strings can be calculated using the following formula:Angle = arccos ((m1*m2) / (m3*(m1+m2))) For this problem, the angles between the strings will be:Angle 1 = arccos ((3*4) / (6*(3+4))) = arccos (0.8) = 61.93° Angle 2 = arccos ((3*6) / (4*(3+6))) = arccos (0.75) = 56.31°Angle 3 = 180° - (Angle 1 + Angle 2) = 180° - (61.93° + 56.31°) = 61.76°Assuming the force table has four support points, the three masses can be balanced by adjusting the angles between the strings. To do this, the three masses must be arranged as far as possible from one another, with the 3 kg mass in the center and the other two masses, 4 kg and 6 kg, on the outside. To begin, the 4 kg mass should be suspended to the left of the 3 kg mass, and the 6 kg mass should be suspended to the right. The angle between the strings should be adjusted so that the 4 kg mass is suspended at an angle of 25 degrees, and the 6 kg mass is suspended at an angle of 155 degrees. This will ensure that the three masses are balanced, with the force exerted by the 4 kg mass equal to the force exerted by the 6 kg mass. To achieve equilibrium, the 3 kg mass should be suspended at an angle of 90 degrees from the 4 kg mass, and the 6 kg mass should be suspended at an angle of 90 degrees from the 3 kg mass. This will ensure that the forces acting on the 3 kg mass are equal, and the forces acting on the 4 kg and 6 kg masses are equal. This will result in a balanced system.To learn more about the force table refer to:
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Hermann ebbinghaus’ research would most likely predict that?
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Mike would rapidly forget most of the material that he read. Dr. Ummel conducts a memory experiment where he shows a fight between two men and describes the contact as "punching" to one group and "tapping" to the other group.
What is meant by memory ?
The capacity or method for repeating or recalling what has been learnt and retained, particularly through associative mechanisms. As he got older, his memory started to fail.Sensory memory, short-term memory, and long-term memory are the three basic types of memory that are discussed.Memory is the capacity to retain and recall knowledge when necessary. Working memory, short-term memory, long-term memory, and sensory memory are the four main categories of memory.Storage refers to where long-term data is kept, whereas memory refers to where short-term data is kept. The term "memory" is most frequently used to describe the main storage on a computer, such as RAM. Information is also processed in memory.To learn more about memory refer to
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what is the source of energy
Answers
Hope this is what you were asking :)
7. If 8 million kg of water flows over Niagara Falls each second, calculate the power available at the bottom of the falls.
Answers
Answer:
The power will be "3.92×10⁹ Watts". A further explanation is given below.
Explanation:
The given values as per the question,
Rate,
= 8 million kg
Distance,
= 50 m
Gravity,
= 9.8 m/s²
As we know,
The power will be:
⇒ \(Power = Rate\times Distance\times Gravity\)
On putting the values, we get
⇒ \(= 8\times 10^6\times 50\times 9.8\)
⇒ \(=3.92\times 10^9 \ Watts\)
A roller coaster speeds up with constant acceleration for 2.3\,\text{s}2.3s2, point, 3, start text, s, end text until it reaches a velocity of 35\,\dfrac{\text{m}}{\text{s}}35
s
m
35, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction over 41\,\text{m}41m41, start text, m, end text. We want to find the initial velocity of the roller coaster before it started to accelerate.
Which kinematic formula would be most useful to solve for the target unknown?
Answers
Answer:
This one:
Explanation:
Khan academy answer
Solve this problem using system of linear equationsA chef is going to use a mixture of two brands of Italian dressing. The first brand contains 7% vinegar, and the second brand contains 12% vinegar. The chef wants to make 210 milliliters of a dressing that is 11% vinegar. How much of each brand should she use? First brand=( ) MillilitersSecond brand=( )Milliliters
Answers
Let's call x the vinegar.
• The first brand contains 7% vinegar, this can be expressed as ,0.07x,.
,• The second brand contains 12% vinegar, this can be expressed as ,(210-x)*0.12, because the total amount is 210 mL.
,• The chef wants to make 210mL which is 11% vinegar, this is going to be the other side of the equation.
Let's express the equation.
\(0.07x+(210-x)\cdot0.12=0.11\cdot210\)Now we solve for x.
\(\begin{gathered} 0.07x+25.2-0.12x=23.1 \\ -0.05x=23.1-25.2 \\ x=\frac{-2.1}{-0.05} \\ x=42 \end{gathered}\)Therefore, the chef needs 42 mL for the first brand and 168 mL for the second one.What should be done in order to decrease the gravitational force between two objects?
Increase the distance between the two objects.
Increase the mass of both of the objects.
Increase the mass of one of the objects.
Decrease the distance between the two objects.
Answers
Answer:
Actually for people in K12 (me) the answer is, "Increase the distance between the two objects"
Explanation:
I used the answer above me and got it wrong
:))
Answer: increase the distance between the two objects
Explanation: its the correct one trust me
In a closed system of a cannon and cannonball, which changes would both result in an increase in the kinetic energy of the cannonball when fired from the cannon?
Answers
Answer:
the length of the cannon
the power of the gunpowder
Answer:
i would say B decrease mass of cannon or decrease mass of cannon ball
Explanation:
because when you fire the cannon the cannon ball and powder exit the cannon then that leaves the cannon ball and i would say that the explosion would force it out the cannon but would not increase its mass.
Latent heat is the ______required for 1 kg of a substance to change phase
Answers
Latent heat is the energy required for 1 kg of a substance to change phase without altering its temperature.
This process involves breaking or forming intermolecular bonds, causing the substance to transition between solid, liquid, or gaseous states.
Two common types of latent heat are the latent heat of fusion (solid to liquid) and latent heat of vaporization (liquid to gas). The specific amount of energy needed depends on the substance's properties and the phase transition occurring.
By understanding latent heat, we can better comprehend various phenomena, such as the energy absorbed or released during melting, boiling, or other phase changes.
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A gravitational force of 2.54 x 10^-10 is exerted by two objects that are 0.25 m apart. If the first object has a mass of 0.35 kg, what is the mass of the second object?
Answers
Answer :
what is the answer options?
Explanation:
What do waves transfer? Question 1 options: matter energy water particles
Answers
what are some examples of the second law of motion
Answers
rank in order, from largest to smallest, the currents i1 , i2 , i3 , and i4 at points 1 to 4. rank from largest to smallest. to rank items as equivalent, overlap them.
Answers
Ranking from largest to smallest, the order of currents i1, i2, i3, and i4 at points 1 to 4 is: i1 > i3 = i2 > i4.
What is the order of currents i1, i2, i3, and i4 from largest to smallest?To determine the order of currents at points 1 to 4, we analyze the circuit configuration and the flow of electrical currents. Based on the given question, the ranking is as follows: i1 is the largest current, followed by i3 and i2, and i4 is the smallest current.
This ranking is determined by the electrical circuit's structure and the resistance values associated with each branch. The larger the resistance, the smaller the current flowing through that branch. Consequently, the branch with the lowest resistance, i1, carries the largest current, while i4 experiences the highest resistance, resulting in the smallest current.
Understanding electrical circuits and the flow of currents is crucial in analyzing and designing various electronic systems. Exploring the principles of circuit analysis, Ohm's law, and Kirchhoff's laws provides a solid foundation for comprehending current behavior and its relationship to circuit components. By studying these fundamental concepts, one can effectively evaluate and rank currents in complex circuit configurations, enabling efficient circuit design and troubleshooting.
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The ranking of currents from largest to smallest is as follows: i3 > i2 > i1 > i4.
Which current has the highest rank among i1, i2, i3, and i4?Ranking the currents i1, i2, i3, and i4 from largest to smallest, we find that i3 has the highest value, followed by i2, i1, and finally i4 with the smallest magnitude. This ranking implies that i3 carries the largest current, while i4 carries the smallest. The ranking is based on the relative magnitudes of the currents at points 1 to 4.
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The image shows a pendulum that is released from rest at point A.
An illustration of a pendulum at 5 different positions. The central position, the equilibrium position is labeled C. The two positions on the left are labeled A and B respectively. The two positions on the right are labeled D and E respectively. All positions are equally spaced.
Which energy transformation is correct?
From A to C, kinetic energy is transformed into gravitational potential energy.
From C to D, kinetic energy is transformed into gravitational potential energy.
From C to E, gravitational potential energy is transformed into kinetic energy.
From D to E, gravitational potential energy is transformed into kinetic energy.
Answers
Answer:
A: Maximum gravitational potential energy
c: maximum kinetic energy
Explanation:
correct on edge
The energy transformation that is correct are:
From A to C, kinetic energy is transformed into gravitational potential energyFrom C to E, gravitational potential energy is transformed into kinetic energy.Energy transfer often occurs when energy changes or moves from one place to another.
Energy often move from one object to another.
A simple pendulum has relatively massive object hung by a string and usually from a fixed support. It often hangs vertically in its equilibrium position.
The massive object is called pendulum bob. when using the pendulum, if the bob is displaced from equilibrium and then released, it often undergo back and forth vibration about its fixed equilibrium position.
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The amplitude of a particle executing simple harmonic motion is 5cm, while its angular velocity is 10 rads -1 . Calculate the magnitude of the maximum acceleration of the particle.
Answers
Answer:
a_max = 50 cm/s^2
Explanation:
To find the magnitude of the maximum acceleration of the particle, you take into account the equation of motion in a simple harmonic motion:
\(x=Acos(\omega t)\)
ω: angular velocity = 10 rad/s
A: amplitude = 5 cm
The acceleration is given by:
\(a=\omega^2 x\)
and the maximum acceleration is obtained when the cosine function is maximum, that is, when cos(wt) = 1. Then, you have:
\(a_{max}=\omega^2 x_{max}=\omega^2A\)
Then, you replace the values of w and A in order to calculate a_max:
\(a_{max}=(10rad/s)^2(5cm)=50\frac{cm}{s^2}\)
hence, the maximum acceleration is 50 cm/s^2
briefly explain what is meant by a surge-type receiver
Answers
A surge-type receiver is a circuit that defends electronic equipment from a large voltage surge or spike by delaying it, weakening it, and allowing it to pass.
A surge-type receiver suppresses voltage surges in the power supply lines. It can be a single-unit surge suppressor that is installed at the inlet to the electrical circuit that needs protection. In addition, surge-type receivers are used in switchboards, power supplies, and other applications.
Surge-type receivers are usually required in electrical systems to protect against unexpected surges in voltage that might cause damage to electronic equipment. This surge in voltage might be caused by lightning strikes or the switching of heavy loads on nearby circuits. It is crucial to include surge suppressors at the input of electrical equipment because it safeguards it from voltage surges that might damage sensitive electronic circuits. The receiver can be utilized to suppress voltage surges in power supply lines and can be a single-unit surge suppressor installed at the inlet to the electrical circuit requiring protection. In addition, surge-type receivers are used in switchboards, power supplies, and other applications, where they suppress power surges caused by switching high loads or lightning strikes.
A surge-type receiver is a critical component in any electrical system. It's responsible for suppressing voltage surges and protecting sensitive electronic equipment from harm. It can be a single-unit surge suppressor installed at the input of the electrical circuit requiring protection or used in switchboards, power supplies, and other applications. Surge suppressors are crucial in defending against unexpected voltage surges that could cause damage to electronic equipment.
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The shortest distance between the initial position and the final position of moving body is called .............
Answers
The Answer Is Displacement
What does dalton theory have in common with democritus
Answers
Answer:
Democritus and Dalton has similar ideas about the atom, but Democritus based his theory more on reason than science. ... His ideas were similar to those of Democrites in that he believed that atoms were indivisible and that atoms of one substance are all alike but are different from atoms of another substance.
Explanation:
PLS MAKE ME AS BRAINLIST
Answer:
Democritus and Dalton has similar ideas about the atom, but Democritus based his theory more on reason than science. ... His ideas were similar to those of Democrites in that he believed that atoms were indivisible and that atoms of one substance are all alike but are different from atoms of another substance.
Explanation:
how to tell if a molecule is polar or nonpolar without electronegativity
Answers
Answer: If the difference in electronegativity for the atoms in a bond is greater than 0.4, we consider the bond polar. If the difference in electronegativity is less than 0.4, the bond is essentially nonpolar. If there are no polar bonds, the molecule is nonpolar