Name:___________________________________________

**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?

*Write down what you know:*

Answer:

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

*Write down what you know:*

Answer:

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

*Write down what you know:*

Answer:

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

Answer:

*Write down what you know:*

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?

Answer:

*Write down what you know:*

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 =

Answer:

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 =

Answer:

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 =

Answer:

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 =

Answer:

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 =

Answer:

h =

GPE =

6. Examine the graphic below.

What is the gravitational potential energy of the 6 kg cart as it sits the the top of the incline? _______________

What is the KINETIC ENERGY of the cart if it is moving at a speed of 2 m/s at the bottom of the ramp? _____________

Show work!