A baseball player is trying to stretch a double into a triple.The 62.0-kg player

Question

A baseball player is trying to stretch a double into a triple.The 62.0-kg player begins sliding 3.60 mfrom third base with a speed of 4.35m/s. (a) If the player comes to rest at third base, how much workwas done on the player by friction?
(b) What was the coefficient of kinetic friction between the playerand the ground?
A baseball player is trying to stretch a double into a triple.The 62.0-kg player begins sliding 3.60 mfrom third base with a speed of 4.35m/s. (a) If the player comes to rest at third base, how much workwas done on the player by friction?
(b) What was the coefficient of kinetic friction between the playerand the ground?

Explanation / Answer

A baseball player is trying to stretch a double into a triple.The 62.0-kg player begins sliding 3.60 mfrom third base with a speed of 4.35m/s. (a) If the player comes to rest at third base, how much workwas done on the player by friction?
kinetic energy=work done by the friction
1/2*62*4.35*4.35=586.59J
(b) What was the coefficient of kinetic friction between the playerand the ground?
work done by the friction=k*62*9.8*3.6=586.59J
so k=coefficient of kineticfriction=586.59/62*9.8*3.6=0.2681

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