A 0.3 kg rubber ball is dropped from the window of a building.It strikes the sidewalk below at 30 m/s and rebounds up at 20 m/s.The magnitude of the impulse due to the collision with the sidewalk is:
A)3.0 N∙s
B)6.0 N∙s
C)9.0 N∙s
D)15 N∙s
E)29 N∙s

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The Answer of A 0.3 kg rubber ball is dropped from the window of a building.It strikes the sidewalk below at 30 m/s and rebounds up at 20 m/s.The magnitude of the impulse due to the collision with the sidewalk is:
A)3.0 N∙s
B)6.0 N∙s
C)9.0 N∙s
D)15 N∙s
E)29 N∙s

A 03 Kg Rubber Ball Is Dropped from the Window of of a Building.It