A neophyte player catches a 125 g ball moving at 25.0 m/s in 0.02 s. A professional player catches the same ball in 1.0 s by slightly retracting his hand during the catch. Find the forces exerted by the ball on the hands of the two players.
F=pΔt=mvΔt,F=\frac{ p}{\Delta t}=\frac{mv}{\Delta t},F=Δtp=Δtmv,
Fnp=0.125⋅250.02=156.25 N,F_{np}=\frac{0.125\cdot 25}{0.02}=156.25 ~N,Fnp=0.020.125⋅25=156.25 N,
Fpp=0.125⋅251=3.13 N.F_{pp}=\frac{0.125\cdot 25}{1}=3.13~N.Fpp=10.125⋅25=3.13 N.
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