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A baseball is hit with a bat. The direction of the ball is completely reversed and its speed is doubled. If the actual contact with the bat lasts what is the ratio of the acceleration to the original velocity?
A)descending at the midway point between the top and bottom of the circleB)ascending at the midway point between the top and bottom of the circleC)at the bottom of the circleD)at the top of the circle

Respuesta :

bjaay24
vi = vvf = -vThe acceleration = Δv/t = (vf-vi)/t =(-v - -v)/t = -2v/ta/v = [-2v/t] = -2/tSubstitute the time.

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