Two identical tennis balls are struck so that each experiences the same change in momentum

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

Two identical tennis balls are struck so that each experiences the same change in momentum, but the racket remains in contact with Ball A for

1.6\,\text{ms}

and with Ball B for

0.80\,\text{ms}

. Determine the ratio

F_{\text{avg,B}}/F_{\text{avg,A}}

of the magnitudes of the average forces exerted on the balls.