A 2000-kg pickup truck is moving at a speed of 40 m/s as its brakes are applied, and comes to a stop in 10 s. Assuming uniform acceleration, a) Draw a sketch of the scenario. b) what is the braking force applied to the truck? c). how far does the truck travel while the brakes are applied? d) What is the Normal force of the truck? e) Recalling that F(friction) = Mu(kinetic) x F(normal), calculate the coefficient of kinetic friction Mu?

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!