Consider the conservation of energy equation below. AK + AU + AEint - W + Q + TMw + TMT + TET + TER A ball of mass m falls from a height h to the floor. (a) Identify the appropriate version of the equation above for the system of the ball and the Earth. O AK + AU = 0 O AU = W O AEint - Q +TET + TER O AK = W Use this equation to calculate the speed of the ball just before it strikes the Earth. (Use the following as necessary: m for mass, h for height, g for acceleration due to gravity.) V = (b) Identify the appropriate version of the equation above for the system of the ball. Ο ΔΚ +Δυ-0 O AEint = Q +TeT + TER O AU = W O AK = W Use this equation to calculate the speed of the ball just before it strikes the Earth. (Use the following as necessary: m for mass, h for height, g for acceleration due to gravity.)

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