5. A 1-kg car and a 2-kg car are both released from the top of the same hill and roll down a frictionless track. At the bottom of the hill, which car will have the greater
speed? Which car will have the greater Kinetic energy?
O A The 1-kg car will have greater speed, and the 2-kg car will have greater kinetic energy
OB. The 2 kg car car will have greater speed, and the 7-kg car will have greater kinetic energy
OC. The cars will have equal speeds and equal kinetic energies.
OD. The cars will have equal speeds and the 2 kg car will have greater kinetic energy
Answers
The cars will have equal speeds and the 2 kg car will have greater kinetic energy.
Answer: it’s D.The cars will have equal speeds and the 2 kg car will have greater kinetic energy.
Explanation:Each car experiences the same gravitational acceleration of 9.81 m/s2, so each car will reach the bottom of the track with the same speed. The heavier car will have greater kinetic energy because the kinetic energy of an object is proportional to its mass.
Related Questions
Explain one way you could set up a tug-of-war that was imbalanced. What did you observe? What did you notice about the forces?
Answers
Why did the chicken cross the road?
(excepting any answers)
Answers
Answer:
to get to other side
because it could not be stopped by death
4 Jilly and Fran are camping. They cover their bottle of milk with a wet cloth.
How does the wet cloth help to keep the milk cool? Tick one box.
A by conduction
B by convection
C by infrared radiation
D by evaporation
PLEASE HELP ITS ERGENT FOR A TEST
Answers
Answer:
HEY THERE!!
Explanation:
the answer to your question is option:
D by cooling evaporation
HOPE THIS HELPED HAVE A GREAT DAY AND GOOD LUCK ON YOUR EXAMS WISHING YOU THE BEST!! <33
Cake, battery, boiling water, a flying kite, a flower vase on top of a table
Which of the items above have
a) Thermal energy
b) Kinetic energy
c) Gravitational potential energy
d) Chemical energy
Answers
But correct me if I’m wrong
Answer:
c i belive or maybe d i would think its one of those
Explanation:
What two gases in the atmosphere do animals and plants need to breathe and grow?
Answers
Answer: Explanation:
Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.
25 POINTS! Q1) A cinder block is pulled 0.50 meters to the right in 3 seconds. What is the block's average speed to the nearest hundredth of a meter per second (m/s)?
Q2) A skateboarder starts at the top of a halfpipe ramp, skates through the middle, and up the other side. Match the following to describe what is happening at each of the three points in the skater's movement.
Middle
End
Beginning
1.
Maximum kinetic energy
2.
Potential and kinetic energy is equal
3.
Maximum potential energy
Answers
The average speed of the blocks are 0.36 m/S.
Explanation:
Average speed is defined as the ratio of distance covered per unit time. So if it is said that blocks are pulled to 0.9 m in the right side. This means the blocks cover a distance of 0.9 m from the origin and that distance is covered in 2.5 s. Thus, the average speed can be calculated from the change in speed
with respect to time. As at time t = 0, the speed is
also zero, and at time t = 2.5 s, the speed will be
Speed =
0.9 = 0.36
2.5
Since, in this case, the speed is equal to the average speed of blocks. So the average speed of the blocks will be 0.36 m/s.
1.maximum kinetic energy minimum GPE
2.GPE is equal to kinetic energy
3 this time there will be maximum GPE
a space station looks like a large wheel. the wheel rotates constantly. the inside of the wheel is the floor of the space station. this spinning motion simulates gravity. explain how this works.
a) the spinning motion simulates the rotation of the earth
b) astronauts must push on the floor and apply force on it to make it move
c) all object in the space station require a force from the floor or they would not move
d) circular motion requires acceleration to change direction. this is created by a force that the floor exerts on objects on the inside of the wheel
Answers
Answer:
d
Explanation:
Answer:
D) circular motion requires acceleration to change direction. this is created by a force that the floor exerts on objects on the inside of the wheel
Explanation:
Which is not true about the pH scale?
The pH scale measures acids and
bases from 1 to 14 on a scale.
The pH scale focuses on the
concentrations of H+ and OH jons
In a solution.
The pH scale was invented by
Svante Arrhenius.
A very strong acid would have a
pH reading close to 1.
Answers
Answer:
The pH scale was invented by Svante Arrhenius is false.
Explanation :
because the pH scale was invented by Soren Sorensen
How much is the mass of aluminum with a volume of 1 m3 less than the mass of lead of the same volume?
Answers
Answer: the masses:mA=mFe or ρA1VA1=ρFeVFethen use the volume of a sphere. By substitution. The answer is (2.70∗103kg/m37.86∗103kg/m3)(2.00cm)3=23.3cm3
Explanation: you must go from left to right when solving substitutuing the first side then dividing
Need help QUICK!!
What is the difference between force and work ?
Thanks for answering! :)
Answers
Answer:
Force is defined as the rate of change of momentum (momentum is mass multiplied by velocity) with respect to time. Work is the product of displacement and the component of force in the direction of displacement. If work is done, then the kinetic energy of an object changes.
Explanation:
That is the difference between force and work
(you can just say a color)
Answers
Answer:
I think its red
Explanation:
divide the distance 8000 by the hours 10 to get 800
Answer:
Red.
Explanation:
If you divide the distance by the time, you will discover that the airplane traveled 800 miles per hour.
Pls mark Brainliest with the crown.
A campfire could be called.
Answers
Answer:
a fire at campsite that provides light and warmth.
List three evidences that show that the Bible is the Word of God.
Answers
Answer:1.God tells us that He is the Author (2 Peter 1:20-21 Open in Logos Bible Software (if available) & 2 Timothy 3:15-17 Open in Logos Bible Software (if available))
1.The Old Testament and New Testament Authors understood they were writing the Word of God. Common Old Testament phrase – “Thus saith the Lord”. The Apostle Peter confirmed the Apostle Paul’s writings as Scripture (2 Peter 3:16)
3.Its Historical Accuracy – as verified by archeology, which has never contradicted the Bible, but only confirms and silences its critics.
Explanation:
Answer:
Many people question who the author of the Bible is and wonder if the Bible is really the Word of God. I want to give you five reasons to affirm that the Bible is God's Word.
The Word of God: Evidence that Scripture is Divine
First, I believe the Bible is the Word of God because of its scientific accuracy. The Truth of the Word of God tells us that God “hangeth the earth upon nothing” (Job 26:7). How did Job know that the earth hung in space before the age of modern astronomy and space travel? The Holy Spirit told him. The scientists of Isaiah’s day didn’t know the topography of the earth, but Isaiah said, “It is [God] that sitteth upon the circle of the earth” (Isaiah 40:22). The word for “circle” here means a globe or sphere. How did Isaiah know that God says upon the circle of the earth? By divine inspiration.
Secondly, the Bible is affirmed through historical accuracy. Do you remember the story about the handwriting on the wall that is found in the fifth chapter of Daniel? Belshazzar hosted a feast with a thousand of his lords and ladies. Suddenly, a gruesome hand appeared out of nowhere and began to write on a wall. The king was disturbed and asked for someone to interpret the writing. Daniel was found and gave the interpretation. After the interpretation, “Then commanded Belshazzar, and they clothed Daniel with scarlet, and put a chain of gold about his neck, and made a proclamation concerning him, that he should be the third ruler in the kingdom.” (Daniel 5:29). Basing their opinion on Babylonian records, the historians claim this never happened. According to the records, the last king of Babylon was not Belshazzar, but a man named Nabonidas. And so, they said, the Bible is in error. There wasn’t a record of a king named Belshazzar. Well, the spades of archeologists continued to do their work. In 1853, an inscription was found on a cornerstone of a temple built by Nabonidas, to the god Ur, which read: “May I, Nabonidas, king of Babylon, not sin against thee. And may reverence for thee dwell in the heart of Belshazzar, my first-born favorite son.” From other inscriptions, it was learned that Belshazzar and Nabonidas were co-regents. Nabonidas traveled while Belshazzar stayed home to run the kingdom. Now that we know that Belshazzar and Nabonidas were co-regents, it makes sense that Belshazzar would say that Daniel would be the third ruler. What a marvelous nugget of truth tucked away in the Word of God!
Explanation:
Someone help me with this ASAP!!
Answers
Water vapor in the air cools and forms clouds.
Someone places a spoon in hot water. The spoon remains in the water till the water becomes room temperature, what temperature is the spoon handle?
Answers
Answer: Room temperature
Explanation: it makes sense (sorry if its wrong)
Why would observe the Sun “move” across the sky during the day support early astronomers' belief in the geocentric model?
Answers
I will pick the most Brainliest but... i need u to tell me how too
What happens when a penny is dropped from a height of 20 meters?
A. The force of gravity causes it to accelerate.
B. Its mass doubles for every second it falls.
C. It changes direction every 9.8 meters.
D. It falls at a constant velocity.
Answers
Answer:
I think it’s a
Explanation:
Answer:
It will accelerate option A
Explanation:
When you drop anything it will continue to accelerate untill it reaches a max speed or friction forces it to slow down or stop.
The bottom wave has a greater _____
(1 point)
amplitude.
frequency.
trough.
wavelength.
Answers
Answer: hope this helps ♡
The bottom wave has a greater frequency.
Explanation:
1. Waves with a low frequency have a longer wavelength.
2. Waves with a high/great frequency have a shorter wavelength.
The bottom wave has a greater frequency. So, the second option is correct.
What is meant by frequency of a wave ?Frequency of a wave is defined as the number of oscillations the wave completes in one second.
Here,
The diagrams of two waves are represented. The propagation of wave from the time zero to one second is given.
From the first diagram,
The wave is travelling from point a at t = 0 and reached at the point b at t = 1 s. This means in a time duration of 1 second, it has travelled a distance ab from a to b. The time taken for one oscillation to complete is called the time period. In the diagram, the number of waves passing in one seconds can be calculated. A few number of waves passed in one second.
From the second diagram,
The wave is travelling from the point a to point b in a time duration of one second. When compared to the top wave, the time taken for one wave to complete is lesser for the bottom wave. That means the time period is lesser than the top wave. In the diagram, it can be seen that, the number waves that has been completed in the one second is very high compared to that of the top wave. That means the bottom wave has higher frequency than that of the top wave.
Hence,
The bottom wave has a greater frequency.
To learn more about frequency of waves, click:
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How could you contract HIV through a cut on your finger
Answers
Essentially you can get it by someone else’s blood going into yours through the cut.
A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
learn more about Potential Energy :
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As you know bone marrow makes red blood cells, white blood cells, and platelets and as you grow it begins to store fat. What do you think a bone marrow transplant will allow the recipient to do?
Answers
Answer: A bone marrow transplant can allow the recipient to produce healthy blood cells if their own bone marrow is damaged or not functioning properly.
What 2 factors is potential energy (PE) dependent upon
Answers
Answer:
The mass and gravity.
Explanation:
Depending on how much mass there is in an object, will determine how fast/slow and object moves. This is the same with gravity, if there is a larger slope, there will be more energy, and if there is less there will be less movement.
Answer:
1. the height of the object relative to a reference point
2. its mass
Explanation:
When you drop something, first of all it accelerates.
The faster it falls, the bigger the force of ______ that acts on it.
choose from the list to complete the sentence:
friction gravity air pressure
note: apparently the answer is friction but it doesn't make sense to me so please explain.
Answers
The faster an object is going, the more resistance there will be. An example of this would be if you're running the faster you run, the more air is going against you.
I hope this helps!
Need help with science pls help me!! 40 points
Answers
Answer: a. Regularly, you rub your hands for warmth.
b. Some examples are friction from electricity going through a wire or friction from rubbing your hand together.
c. Without friction, we would fall every time we walked. Because there is friction, we can walk normally. Another example is a ball moving across the field. Without friction, the ball would not slow down.
Explanation:
Overall, friction is important to us because we depend on it.
hands for warmth.
b. Some examples are friction from
electricity going through a wire or
friction from rubbing your hand
together.
c. Without friction, we would fall every
time we walked. Because there is
friction, we can walk normally. Another
example is a ball moving across the field.
Without friction,
the ball would not slow
down.
Explanation:
Overall, friction is important to us because we depend on it.
If someone lifts less weight than you, explain why that person could be considered more powerful.
Answers
Answer:
there faster
Explanation:
stronger,wiser,better,THEY ARE BETTTEEEEEEEERRRRRRRR
Answer:
they're so strong that they don't need to lift heavy weights anymore because they're experts (slay lol). so they just have a simple daily workout.
Which statement best compares the accelerations of two objects in free fall?
O The heavier object has a greater acceleration.
O The object that has the greater surface area has the lower acceleration,
The object that has the smaller mass has the greater acceleration.
O The objects have the same acceleration
Answers
Answer:
C. The object that has the smaller mass has the greater acceleration.
Explanation:
Two objects in free fall are accelerated due to gravity.
According to Newton's second law, if two objects with different masses have same force, then object with light or smaller weight will fall with greater acceleration while the object with greater mass will fall with less acceleration.
Hence, the correct option is C.
Answer:
c
Explanation:
its c
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 1 is doubled AND the distance separating Objects 1 and 2 is tripled, then the new electrostatic force will be _____ units
Answers
Answer:
8 units
Explanation:
F=(k*q1*q2)/(r^2)
K is a constant, q1 is charge of 1, q2 is charge of 2, r is distance between the two.
plz hurry How fast can work be done by a 7 horsepower engine?
Answers
Answer:
It will go about 45-50 mph.
Explanation:
Depending on what you are hauling.
Which equation is balanced?
A. Na+F2→2NaF
B. Al+3O2→Al2O3
C. 2Al+3F2→2AlF3
D. Mg+2O2→2MgO
Answers
what type of vehicle is this. and does it have more or less kinetic energy. pls answer the type of vehicle first pls ty.
Answers
Answer:
koenigsegg jesko
Explanation:
Under braking, the kinetic energy recovery system in the Regera can regenerate up to 150 kW of power to recharge the battery during operation.
hoped that helped! :)
Answer:
koenigsegg jesko
Explanation:
and more kanedic energy