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An archer stands on the ground and fires an arrow at a target. A second archer stands at the top of a building and holds an arrow in his hand. Which arrow has more potential energy? Explain. In the same scenario described which arrow has more kinetic energy? Explain.

Calculate the increase in reaction under the feet of person of weight 600N in a lift, if the lift accelerates upward with an acceleration 1 m/s2

Determine the elastic potential energy stored in a spring with a spring constant of 125 N/m that is compressed 0.75 m.

6) A student late to class runs at a constant 4.30 m/s to catch a bus. She reaches the bus stop 2.00 s after the bus starts from rest with an acceleration of 0.950 m/s2. Where and when does the student catch the bus?

How much does a spring with a spring constant of 400 N/m need to be compressed in order to store 8.5 J of elastic potential energy?

What percentage is the maximum range of a projectile if the initial velocity is increased by 10%?

What is the spring constant of a spring that is compressed 0.2 m and has 1.50 J of elastic potential energy stored in it?