A boat coasts under a bridge at a constant speed, and while moving under the bridge a large sack is dropped onto the boat from the top of a bridge. The speed of the boat will a) decrease, b) increase, c) stay the same or d) could slow down or speed up depending on the mass of the sack.

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A:

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: