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QUIZ

SUPER

9th

grade

71%

accuracy

145

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Scott Lupo

3 years

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28 questions

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- 1. Multiple Choice1 minute1 pt
A 6kg cat misjudges a jump and falls 5 meters. How much gravitational potential energy does the cat have? (The cat is fine by the way.)

294 J

180000 J

1225 J

3920000 J

- 2. Multiple Choice1 minute1 pt
A 50kg (100lb) person is running at 7m/s (about 16 mph). How much kinetic energy do they have?

1225 J

180000 J

294 J

3920000 J

- 3. Multiple Choice10 seconds1 pt
What is the unit for mass?

kilogram (kg)

meter (m)

Newton (N)

Joule (J)

- 4. Multiple Choice10 seconds1 pt
What is the unit for distance?

kilogram (kg)

meter (m)

Newton (N)

Joule (J)

- 5. Multiple Choice10 seconds1 pt
What is the unit for force?

kilogram (kg)

meter (m)

Newton (N)

Joule (J)

- 6. Multiple Choice10 seconds1 pt
What is the unit for energy?

kilogram (kg)

meter (m)

Newton (N)

Joule (J)

- 7. Multiple Choice10 seconds1 pt
What is the formula for kinetic energy?

distance / time

mass x acceleration

velocity / time

½(mass) x (velocity)

^{2}(mass) x (acceleration of gravity) x (height)

- 8. Multiple Choice10 seconds1 pt
What is the formula for gravitational potential energy?

distance / time

mass x acceleration

velocity / time

½(mass) x (velocity)

^{2}(mass) x (acceleration of gravity) x (height)

- 9. Multiple Choice1 minute1 pt
At which point is potential energy greatest?

W

X

Y

Z

- 10. Multiple Choice1 minute1 pt
What kind of energy is stored energy?

Potential

Kinetic

None of the above

All of the above

- 11. Multiple Choice1 minute1 pt
The faster an object moves, the ________ kinetic energy it has.

more

less

none of the above

same

- 12. Multiple Choice1 minute1 ptWhat kind of energy is in a moving skateboard?PotentialKineticBoth potential and kinetic energynone of the above
- 13. Multiple Choice1 minute1 ptWhat kind of energy is in a rock at the edge of a cliff?PotentialKineticBoth potential and kinetic energynone of the above
- 14. Multiple Choice1 minute1 ptWhich is the best example that something has kinetic energy?a. a car parked on a steep hillb. a tennis ball rolling across the courtc. a picture hanging on the walld. a piece of coal before it's burned
- 15. Multiple Choice1 minute1 ptWhat kind of energy is in a person climbing a ladder?PotentialKineticBoth
- 16. Multiple Choice30 seconds1 pt
The statement that "the energy within a system remains constant and cannot be created or destroyed, only transformed" best sums up _________.

Something Mr. Lance likes to say.

Life

Law of Conservation of Energy

The scientific method

Newton's Third Law

- 17. Multiple Choice30 seconds1 pt
Which of the following is the correct equation for calculating an object's gravitational potential energy?

PE = mgh

PE = mg / h

PE = mg + h

PE = gh

- 18. Multiple Choice5 minutes1 pt
In the equation

*PE = mgh*, what does the “g” mean?Acceleration due to gravity

Force of gravity

Weight of the object

- 19. Multiple Choice30 seconds1 ptAt which point is kinetic energy greatest?WXYZ
- 20. Multiple Choice2 minutes1 ptExplain what happens to the potential energy of a rock as it falls off the side of a cliff.The kinetic energy decreases as the potential energy increases.The kinetic energy decreases as the potential energy decreases.The potential energy decreases as the kinetic energy increases.The potential energy decreases as the kinetic energy decreases.
- 21. Multiple Choice2 minutes1 pt
A cheetah can run briefly with a speed of 31.0 m/s. Suppose a cheetah with a mass of 47.0 kg runs at this speed. What is the cheetah’s kinetic energy?

1457 Joules

22,584 Joules

15 Joules

45,167Joules

- 22. Multiple Choice2 minutes1 ptGravitational potential energy depends on the ________ and ________ of the object.Height and massFriction and movementMass and MovementHeight and Friction
- 23. Multiple Choice5 minutes1 ptA 0.40 kilogram bird is flying at a constant speed of 8.0 m/s. What is the bird's kinetic energy ?3.2 J4.2 J2.0 J12.8 J
- 24. Multiple Choice5 minutes1 ptA 60.0 kg person walks from the ground to the roof of a 74.8 m tall building. How much gravitational potential energy does she have at the top of the building?43982.4 J63982.3 J43962.4 J83942.4 J
- 25. Multiple Choice5 minutes1 ptA 50.0 kg wolf is running at 10.0 m/s. What is the wolf's kinetic energy?1500 J2.250 J2500 J3500 J
- 26. Multiple Choice30 seconds1 pt
The formula for calculating the gravitational potential energy in an object is shown above. Which object will have the largest value for its GPE

- 27. Multiple Choice30 seconds1 pt
How high must a 20kg box be lifted to give it 784J of potential energy?

3.98 km

392 m

4.0 m

3

- 28. Multiple Choice30 seconds1 ptWhich of the following has kinetic energy?a rock poised for a falla stretched rubber banda rolling bowling balla car waiting at a red light
- Answer choicesTagsAnswer choicesTags
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