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In the Force lab, we use a small lab car with mass m=5 Kg, the experiment...

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Physics

In the Force lab, we use a small lab car with mass m=5 Kg, theexperiment is on a horizontal table, on the car is acting a pullingforce F= 20 N and the kinetic friction force Fr is acting as well.The car initially is at rest, and take 6.0 seconds to reach thevelocity of 8.5 m/s.

a)      Calculate the magnitude of the friction force Fr acting on thecar?

b)      Weremove the pulling force when the car reaches the velocity of 8.5m/s. What will be the total distance travelled by the car beforestop? (From t=0 seconds until stop)

c)      What is the kinetic coefficient of friction?

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