A 61 {\ m} {kg} trampoline artist jumps vertcally upward from the top of a platf

Question

A 61 { m} {kg} trampoline artist jumps vertcally upward from the top of a platform with a speed of 5.5 { m} {m/s}.

What is his speed as he lands on the trampoline, 3.9 { m} {m} below his jump off point?
Express your answer to 2 significant figures.

If the trampoline behaves like a spring with spring stiffness constant 7.1×104 { m} {N/m}, how far does he depress it? Any depression of the trampoline from equilibrium is to be taken as a negative distance.
Express your answer to 2 significant figures.

Explanation / Answer

there is a calculation mistake in the above solution, x = -0.31 cm

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