Solve the following problem.
1.You serve a volleyball with a mass of 2.1kg. The ball leaves your hand at 30m/s. What kind of energy does the ball have? Calculate the amount of energy the ball possess.
2. There is a bell on top of a 45.0 meter high tower. The bell weighs 190N. Calculate the amount of energy the bell has.
3. What is the mass of an apple at 3.0 m high and with a potential energy of 6.0 joules
4. What is the velocity of a 500kg elevator that has 4000J of energy.
5. What is the mass of an object that creates 33,750J of energy by traveling at 30m/s.
6. Missy Diwater, a Ringling Brothers' Circus platform diver had a KE of 15,000) prior to hitting the bucket of water. If Missy weighs 50kg, what was her velocity?
7. A 75kg refrigerator is located on the 70th floor of a 3000m high skyscraper. What is the potential energy of the refrigerator?
8. What is the height of an object that has a mass of 50kg, and its gravitational potential energy is 9800)?
9. A 10kg mass is lifted to a height of 2m. What is its PE at this position?
10. Calculate the KE of a 2900kg truck, moving at 55m/s.
11. What is the KE of the 0.0042kg bullet as it exits the gun barrel at 993m/s
12. What is the potential energy of a 3kg ball that is on the ground? At 2m/
13. A roller coaster is standing still at the top of a 72m hill and weighs 966N before it moves downward. Find its potential energy.
14.A 90J baby carriage is rolling down a hill at 18m/s. What is its mass? 22
1.You serve a volleyball with a mass of 2.1kg. The ball leaves your hand at 30m/s. What kind of energy does the ball have? Calculate the amount of energy the ball possess.
2. There is a bell on top of a 45.0 meter high tower. The bell weighs 190N. Calculate the amount of energy the bell has.
3. What is the mass of an apple at 3.0 m high and with a potential energy of 6.0 joules
4. What is the velocity of a 500kg elevator that has 4000J of energy.
5. What is the mass of an object that creates 33,750J of energy by traveling at 30m/s.
6. Missy Diwater, a Ringling Brothers' Circus platform diver had a KE of 15,000) prior to hitting the bucket of water. If Missy weighs 50kg, what was her velocity?
7. A 75kg refrigerator is located on the 70th floor of a 3000m high skyscraper. What is the potential energy of the refrigerator?
8. What is the height of an object that has a mass of 50kg, and its gravitational potential energy is 9800)?
9. A 10kg mass is lifted to a height of 2m. What is its PE at this position?
10. Calculate the KE of a 2900kg truck, moving at 55m/s.
11. What is the KE of the 0.0042kg bullet as it exits the gun barrel at 993m/s
12. What is the potential energy of a 3kg ball that is on the ground? At 2m/
13. A roller coaster is standing still at the top of a 72m hill and weighs 966N before it moves downward. Find its potential energy.
14.A 90J baby carriage is rolling down a hill at 18m/s. What is its mass? 22
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Answer:KINETIC AND POTENTIAL ENERGY WORKSHEET Name:______KEY__________________
Determine whether the objects in the following problems have kinetic or potential energy. Then choose the
correct formula to use: KE = 1/2 m v2 OR PE = mgh = Fwh
1. You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. The ball has
_kinetic____ energy. Calculate it.
KE= ½ m v2
= ½ (2.1 kg)(30 m/s)
2 = 945 Joules
2. A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby weighs 12 N. The
carriage has ___potential_________ energy. Calculate it.
PE = Fwh = (12N) (21 m) = 252 Joules
3. A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. The car has __kinetic_______energy.
Calculate it.
KE= ½ m v2
= ½ (1120 Kg) (40 m/s)
2 = 896000 Joules
4. A cinder block is sitting on a platform 20 m high. It weighs 79 N. The block has ___potential _____ energy.
Calculate it.
PE= Fwh = (20m) (79 N) = 1580 Joules
5. There is a bell at the top of a tower that is 45 m high. The bell weighs 190 N. The bell has __potential
______ energy. Calculate it.
PE= Fwh = (45m) (190 N) = 8550 Joules
6. A roller coaster is at the top of a 72 m hill and weighs 966 N. The coaster (at this moment) has
__potential_____ energy. Calculate it.
PE= Fwh = (72 m) (966 N) = 69552 Joules
7. What is the kinetic energy of a 3-kilogram ball that is rolling at 2 meters per second?
KE= ½ m v2
= ½ (3kg) (2 m/s)2 = 6 Joules
8. The potential energy of an apple is 6.00 joules. The apple is 3.00-meters high. What is the mass of the apple?
PE= mgh 6 J= (3m) (9.8 m/s2
) (__m) m= 0.20 Kg
9. Two objects were lifted by a machine. One object had a mass of 2 kilograms, and was lifted at a speed of
2 m/sec. The other had a mass of 4 kilograms and was lifted at a rate of 3 m/sec.
a. Which object had more kinetic energy while it was being lifted?
KE= ½ m v2
= ½ (2kg) (2 m/s)2 = 4 Joules OR = ½ (4 kg) (3 m/s)2 = 18 Joules this one had
more KE
b. Which object had more potential energy when it w
Explanation: