A bumper car slides along a horizontal surface on which the coefficient of kinet

Question

A bumper car slides along a horizontal surface on which the coefficient of kinetic friction is 0.2. It's velocity at point 1 is 6.5 m/s and at point 2 is 4 m/s. Use the impulse-momentum theorem to find how long it takes the bumper car to travel from point 1 to point 2. A bumper car slides along a horizontal surface on which the coefficient of kinetic friction is 0.2. It's velocity at point 1 is 6.5 m/s and at point 2 is 4 m/s. Use the impulse-momentum theorem to find how long it takes the bumper car to travel from point 1 to point 2.

Explanation / Answer

Given,

the coefficient of kinetic friction is 0.2

velocity at point 1 is 6.5 m/s

at point 2 is 4 m/s

Deceleration = 0.2 * 9.8

= 1.96

4 = 6.5 - 1.96 * t

t = 0.881 s

it takes the bumper car to travel from point 1 to point 2 is  0.881 s

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