Question

What are the two forces acting on the ball and the feather?​

Answer 1

Answer:

There are two forces acting on the ball: tension from the string and force due to gravitation. They cancel each other.

Answer 2

Answer:

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Explanation:

There are two forces acting on the ball: tension from the string and force due to gravitation.

When the retarding force of the air just balances the downward pull of gravity, the object will no longer gain speed; it will have reached what is called its terminal velocity. Since the feather is so much lighter than the coin, the air resistance on it very quickly builds up to equal the pull of gravity.