Suppose that you are working in the physics lab and program a computer to exert a certain amount of force on a 3 kg object over a period of time. The force is described as function of time by the given graph. If the object was originally moving at 2m/s [S],what is the new velocity at t=8 s?

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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!