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A child tosses a ball straight up. She says the ball is moving away from her han

ID: 1630536 • Letter: A

Question

A child tosses a ball straight up. She says the ball is moving away from her hand because the ball feels an upward "force of the throw" as well as the gravitational force.

(a) Can the "force of the throw" exceed the gravitational force?

Yes or No?


How would the ball move if it did?



(b) Can the "force of the throw" be equal in magnitude to the gravitational force?

Yes or No?

Explain.?



(c) What strength can accurately be attributed to the force of the throw?
... N???

Explain your answer. ?



(d) Why does the ball move away from the child's hand? Explain

Explanation / Answer

a) No, the "force of throw" can never exceed the gravitational force because if it does, the ball would keep moving upward and never come back.

b) No, it can't have a magnitude equal to the gravitational force because if it did, it will not move anywhere but be in equilibrium.

c) It is equal to the upward force of the child minus the ball's weight.

d) The ball moves away from the child's hand because of the force applied by the child which has to be greater than gravitational force. (Keep in mind that this force is not the force of throw.)

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