A 3.00-kg stone is dropped from a 39.2 m high building.When the stone has fallen 19.6 m,the magnitude of the impulse the Earth has received from the gravitational force exerted by the stone is
A)9.80 N . s.
B)19.6 N . s.
C)29.4 N . s.
D)58.8 N . s.
E)118 N . s.

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The Answer of A 3.00-kg stone is dropped from a 39.2 m high building.When the stone has fallen 19.6 m,the magnitude of the impulse the Earth has received from the gravitational force exerted by the stone is
A)9.80 N . s.
B)19.6 N . s.
C)29.4 N . s.
D)58.8 N . s.
E)118 N . s.

A 300-Kg Stone Is Dropped from a 39