# A gymnast of mass 65 kg bounces vertically on a trampoline so thatshe approaches and leaves the trampoline with a speed of 10 m/s andcontact time of 0.9 s. Calculate (1) her change of momentum (ii) theaverage resultant force exerted on her while in contact with thetrampoline​

###### Question:

A gymnast of mass 65 kg bounces vertically on a trampoline so that
she approaches and leaves the trampoline with a speed of 10 m/s and
contact time of 0.9 s. Calculate (1) her change of momentum (ii) the
average resultant force exerted on her while in contact with the
trampoline​

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