Three forces are exerted on an object placed on a tilted floor. The three forces are directed as shown in Figure E2.1 . If the forces have magnitudes F1 = 1.0 N, F2 = 8.0 N and F3 = 7.0 N, what is the component of the net force Fnet = F 1 + F2 + F3 parallel to the floor?

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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!