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    Newton's Law of Motion - sliding down a slope

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    A 20-kg child sits on a 5-kg sled and slides down a 125-meter, 31-degree slope, to the nearest m/s what is his or her speed at the bottom?

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    The total mass of the child + sled = 25 Kg, we will consider this as a single mass. The only force acting on the mass when it is at the top of the slope is the force due to gravity which is equal to

    F = mg

    This acts vertically downwards.

    But ...

    Solution Summary

    The solution gives all mathematical steps. Newton's law of motion for sliding down a slope is determined.