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Answer all with steps 1. A moving particle is subject to conservative forces only. When its...

Answer all with steps

1. A moving particle is subject to conservative forces only. When its kinetic energy decreases by 10 J, what happens to its mechanical energy?

2. A 1.2 kg mass is projected from ground level with a velocity of 30 m/s at some unknown angle above the horizon. A short time after being projected, the mass barely clears a 16-m tall fence. Disregard air resistance and assume the ground is level. What is the kinetic energy of the mass as it clears the fence?

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