Momentum

Momentum is a measure of motion, calculated by multiplying an object's mass by its velocity. It has both direction and magnitude. When objects interact, their total momentum is conserved, as seen in snooker ball collisions. On Earth, external forces like friction and gravity eventually stop moving objects, transferring momentum to the ground, slightly affecting Earth's rotation. In space, without air resistance, objects maintain their momentum indefinitely.

How do outside forces like friction affect momentum?

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Why does a space probe maintain its momentum in space?

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