A 1370-kg car is moving due east with an initial speed of 29.0 m/s. After 6.37 s the car has slowed down to 15.8 m/s. Find the magnitude of the net force that produces the deceleration. Number ________ Units ________

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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!