13 questions

- 1. Multiple Choice
What is the correct unit for energy?

meters (m)

kilogram meters per second (kg m/s)

Newtons (N)

Joules (J)

- 2. Multiple ChoiceThe faster an object moves, the ________ kinetic energy it has.morelessnone of the aboveall of the above
- 3. Multiple ChoiceGravitational potential energy depends on the ________ and ________ of the object.Height and massFriction and movementMass and MovementHeight and Friction
- 4. Multiple Choice
What is the equation for calculating gravitational potential energy

mv

1/2 mv^2

mgh

Ft

- 5. Multiple Choice
What is the equation for calculating kinetic energy?

mv

1/2 mv^2

mgh

Ft

- 6. Multiple Choice
Calculate the potential energy of a car with a mass of 2,500 kg that is on a hill 100 meters above sea level. (g = 10 Nkg

^{-1})250,000 J

2,500,000 J

25,000,000 J

250 J

- 7. Multiple Choice
Lilly's cat ran through your yard. The cat has a mass of 5 kg. He is running at a speed of 3 m/s. What is the kinetic energy of the cat as he runs? (KE = 1/2mv

^{2})8.5 J

45 J

7.5 J

22.5 J

- 8. Multiple Choice
Alice kicks a soccer ball with a mass of 2.1 kg. The ball leaves the ground moving 30 meters per second. What is the kinetic energy of the soccer ball? (KE = 1/2mv

^{2})567 J

900 J

945 J

30 J

- 9. Multiple Choice
If the 0.3 kg marble was moving at 6 m/s at the bottom of the ramp, how much kinetic energy did the marble have? (KE = 1/2mv

^{2})5.4 J

1.8 J

3 J

6 J

- 10. Multiple Choice
If the 1.2 kg basketball rolls at 3 m/s, what is it's kinetic energy? (KE = 1/2mv

^{2})2.7

5.4

3.6

9

- 11. Multiple Choice
A 5 Kg body is having a Kinetic energy of 250 J. What is the velocity (or speed) of the body?

10 m/s

15 m/s

20 m/s

40 m/s

- 12. Multiple Choice
What is the mass of a ball that has a kinetic energy of 115 J and is traveling at a speed of 9 m/s?

1035 kg

23.5 kg

12.8 kg

2.84 kg

- 13. Multiple Choice
A exercise ball is on a table 2.5 m above the ground. What is the mass of the ball if it has a GPE of 56.8 J?

71 kg

22.72 kg

142 kg

2.32 kg

- Answer choicesTagsAnswer choicesTags