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Science
6th -
10thgrade
MECHANICAL: Kinetic & Potential Energy Calculations
13 questions
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- 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 = 1/2mv2)
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 = 1/2mv2)
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 = 1/2mv2)
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 = 1/2mv2)
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
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