VernellMatthes VernellMatthes

08-06-2015
Physics

Answered

An 81 kg football player moving 6.5 m/s tackles and collides with a stationary 140 kg football player. What speed will the football players have the moment after impact?

Answer :

SwagGirl SwagGirl

08-06-2015

the answer would be 2.4m/s

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qzakoian qzakoian

08-06-2015

If you consider that the power is the same before and after, you have Pplayer1=81*6,5=Pplayer2=140*SpeedAfter

=> SpeedAfter = 81 * 6,5 / 140 = 3,76 m/s

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