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A sled is traveling at 15.0 m/s. It slides to rest under the influence of friction...

A sled is traveling at 15.0 m/s. It slides to rest under the influence of friction in 2.54 s. What is the coefficient of kinetic friction required to do this?

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Answer #1

Let, the initial velocity, final velocity and acceleration of the sled be u, v and a respectively.

Using the law of kinematics,

Hence, the sled decelerates at 5.90 m/s2.

Now, Frictional force,

Hence, acceleration, a = Force/mass = F/m = *g

Answer: the coefficient of kinetic friction is 0.6.

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