1. An object of mass 10.1 kg is pushed directly from rest along a horizontal surface, a distance of 3.9 m, and reaches a speed of 3.6 m/s by the end of the push. The frictional force acting is 7.5 N. (a) Determine the acceleration of the object while being pushed. (b) Determine the value of the applied force that is acting.

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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!