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Coefficient of Kinetic Friction Between Football Uniforms and Astroturf After a Head-On Collision

Fred (mass 70.0 kg) is running with the football at a speed of 7.10 m/s when he is met head-on by Brutus (mass 130 kg), who is moving at 5.10 m/s. Brutus grabs Fred in a tight grip, and they fall to the ground. How far do they slide? The coefficient of kinetic friction between football uniforms and Astroturf is 0.350. Give answer in cm.

Solution Preview

m1 = 70 kg
m2 = 130 kg
u1 = 7.10 m/s
u2 = -5.10 m/s (-ve sign: opposite direction)

After collision
m = m1 + m2 = 200 kg
v =?

By momentum ...

Solution Summary

The solution walks the reader through the calculations taken to find the coefficient of kinetic friction between football uniforms and astroturf after a head-on collision between players where their speed and masses are given.

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