# Gravitational Potential Energy

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Work, Energy and Power Learning Material
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5.3Gravitational Potential Energy

## Gravitational Potential Energy Revision Questions

1. What happens with the gravitational potential energy of a 5 kg object if it moves according the trajectory shown in the figure? Take g ≈ 10 m/s2. 1. Increases by 700 J
2. Increases by 600 J
3. Decreases by 100 J
4. Increases by 850 J

2. A 3 kg object falls from 24 m above the ground as shown in the figure. What is the velocity of this object when it touches the ground? Ignore the air resistance. Take g ≈ 10 m/s2. 1. 21.9 m/s
2. 15.5 m/s
3. 26.8 m/s
4. 19.0 m/s

3. A 1 kg object moves according the trajectory shown in the figure. What is the velocity of the object when it is at ground level? Take g ≈ 10 m/s2 and ignore all kinds of resistive forces.

1. 11.1 m/s
2. 7.9 m/s
3. 2 m/s
4. 0

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5. Continuing learning work, energy and power - read our next physics tutorial: Elastic Potential Energy and Combination of Springs