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|5.3||Gravitational Potential Energy|
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.
Correct Answer: B
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.
Correct Answer: A
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.
Correct Answer: A
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