Starting from rest at the top, a child slides down the water slide at a swimming pool and enters the water at a final speed of 10.0 m/s. At what final speed would the child enter the water if the water slide were four times as high

The child will enter the water at a final speed of 20 m/s

Explanation:

Given;

final speed of the child, = 10 m/s

let the height of water slide, = h

According to conservation of energy, the change in kinetic energy of the child must be equal to the change in potential energy,

ΔK.E = ΔU

Therefore, the child will enter the water at a final speed of 20 m/s if the water slide were four times as high

amplitude

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