Question

फोर्स इज डांस डांस quantity​

Answer 1

Answer:

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Explanation:

Force changes momentum:

The harder you push, the more rapidly the momentum changes.

The longer you push, the greater the total change in momentum.

The equation: .

If you don't push on something, its speed doesn't change. Greater momentum -> harder to stop.

If you don't push on something its direction of travel doesn't change. Note that point in the same direction.

If you do push on something, you can change its speed and/or its direction of travel.

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Net force: adding forces

Cart on air track feels two forces:

gravity

up & slightly to-the-left push from air track (there's no frictional force parallel to the air track)

The net force causes the change in the cart's momentum.

Net force on a dancer: gravity (down) + support from floor (up) + friction from floor (sideways)