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# Kinetic Energy Problemset

SHOW ALL WORK!

1.  What is the kinetic energy of a jogger with a mass of 65.0 kg traveling at a speed of 2.5 m/s?

Write down what you know, for example:

m =

v =

KE =

2.  What is the mass of a baseball that has a kinetic energy of 100 J and is traveling at 5 m/s?

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3. What is the kinetic energy of a 0.5 kg soccer ball that is traveling at a speed of 3 m/s?

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4  What is the kinetic energy of a 1 kg pie travelling at a speed of 4 m/s ?

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5.  What is the kinetic energy of the pie if it is thrown at 10 m/s?

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6. A student is hit with a 1 kg pumpkin pie. The kinetic energy of the pie 32 J. What was the speed of the pie?

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## GPE = mgh | g = 9.8 m/s2

1.  Find the gravitational potential energy of a light that has a mass of 13.0 kg and is 4.8 m above the ground.

m =

g =

h =

GPE =

2.  An apple in a tree has a gravitational potential energy of 175 J and a mass of 0.36 g.  How high from the ground is the apple?

m =

g =

h =

GPE =

3.  A marble is on a table 2.4 m above the ground.  What is the mass of the marble if it has a GPE of 568 J.

m =

g =

h =

GPE =

4.  A box with a mass of 12.5 kg sits on the floor.  How high would you need to lift it for it to have a GPE of 355J ?

m =

g =

h =

GPE =

5.  A cart at the top of a 300 m hill has a mass of  40 kg.  What is the cart’s gravitational potential energy?

m =

g =