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- 1. Multiple Choice
The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?
mechanical to heat
sound to mechanical
potential to kinetic
kinetic to potential
- 2. Multiple Choice
A ball is projected into the air. Where is potential energy the greatest?
- 3. Multiple Choice
Which point on the roller coaster's path represents the maximum potential energy?
- 4. Multiple Choice
As a roller coaster goes downhill
kinetic energy is converted into potential energy.
potential energy is converted into kinetic energy.
electrical energy is converted into potential energy.
potential energy is converted into electrical energy.
- 5. Multiple Choice
When gasoline is burned in a car engine, ________ energy is converted into _________ energy.
heat, chemical
chemical, potential
mechanical, chemical
chemical, mechanical
- 6. Multiple Choice
What form of energy does a compressed spring have?
heat energy
kinetic energy
chemical energy
elastic potential energy
- 7. Multiple Choice
A drawn bow possesses mechanical energy in the form of _______________. After the arrow is released, the energy is transformed into _________________.
potential energy; mechanical energy
elastic potential energy; kinetic energy
gravitational potential energy; kinetic energy
elastic kinetic energy; mechanical kinetic energy
- 8. Multiple ChoiceEnergy can be created.TrueFalse
- 9. Multiple Choice
The Law of Conservation of Energy states:
Energy can created or destroyed but not transformed
Energy cannot be created or destroyed, it can only transformed
Energy can't be created, destroyed or transformed
Energy cannot be created or destroyed.
- 10. Multiple Choice
What is the formula for Kinetic Energy?
KE = mass x velocity
KE= 1/2 x mass x velocity 2
KE = mass x gravity x height
KE = mass x velocity / 2
- 11. Multiple Choice
What happens when the ball goes from the highest position to the lowest position
PE and KE increases and decreases together
Impossible to know without knowing the mass of the object
the PE decreases while KE increases
- 12. Multiple Choice
The SI Unit for Energy is
Joule
Potential
Calorie
Kilojoule
- 13. Multiple Choice
What kind of energy does an object possess when it's resting on top of the hill?
Potential Energy
Chemical Energy
Kinetic Energy
All of the above
- 14. Multiple Choice
What force causes a roller coaster cart to slow down the most?
friction
weight
gravity
air resistance
- 15. Multiple ChoiceThe law of energy conservation says the total energy before the change _______ the total energy after itis less thanis more thanaffectsequals
- 16. Multiple Choice
The highest inhabited town in the world has an elevation of 5334 m above sea level. What would be the gravitational potential energy of a 64 kg person in this town?
341,376 J
83.3 J
3,345,484.8 J
34,834.3 J
- 17. Fill in the Blank
What is the gravitational potential energy of an 85 kg mountain climber at the summit of a 6267 m volcano? GPE = ______ (g=10m/s^2)
- 18. Fill in the Blank
What is the gravitational potential energy of a 26 kg eagle, flying at an altitude of 65 m at a speed of 19 m/s? ____ J
- 19. Multiple Choice
An Olympic high jumper, with a mass of 82 kg, has a maximum gravitational potential energy of 1970 J. How high was the jump? (Use g= 10m/s^2)
24 m
161,540 m
2.4 m
201 m
- 20. Multiple Choice
The world record for pole vaulting is 6.15 m. I the pole vaulter’s gravitational potential energy is 4942 J, what is his mass? (Use g=10m/s^2)
803.6 kg
504.3 kg
30,393.3 kg
80.36 kg
- 21. Multiple Choice
On a distant planet, the GPE of a 65 kg astronaut is 11,115 J when they are on a 45 m tall cliff. What is the acceleration due to gravity on this planet?
16,055 m/s2
0.26 m/s2
3.8 m/s2
9.8 m/s2
- 22. Multiple ChoiceAn 8kg dog chases a cat. if the dog has 400J of kinetic energy. What is the speed of the dog?10 m/s5 m/s1 m/s100 m/s
- 23. Fill in the Blank
A 1 kg rock falls 20 meters, the rock going ______ m/s just before it hits the ground? (g=10m/s^2)
- 24. Fill in the Blank
A rather unbalanced goat jumps off a cliff. The goat has a mass of 50kg and the cliff is 450m high. The goat will hit the ground traveling _____ m/s? (g=10m/s^2)
- 25. Fill in the Blank
1. A high diver reaches the highest point in her jump where her center of gravity is 10m above the water. The speed at which the diver enters the water is ______ m/s. (10m/s^2)
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