When the net force acting on a body is zero, __________ . a. The body must be at rest b. The body must have a nonzero acceleration. c. The body must be moving with a constant velocity. d. The body must haved zero mass. e. The body must not be moving in a straight line.

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A: Given,mass of the block, m = 25.0 kgθ = 30.0°

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A:

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A: mass of girl = 50 kg mass of boy = 100 kg distance between girl and boy = 6 m force exerted by boy…

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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!