An object of mass m moves with acceleration a with arrow down a rough incline. Which of the following forces should appear in a free-body diagram of the object? Choose all correct answers.the friction force exerted by the inclinema with arrow in the direction of motionthe force exerted by the object on the inclinethe normal force exerted by the inclinethe gravitational force exerted by the planet

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Q: the middle select menu is right or left.

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Q: (b) Find the coefficient of kinetic friction between the block and the surface.

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A: a)Free body diagram:

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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!