You are lying in bed and want to shut your bedroom door. you have a bouncy "superball" and a blob of clay, both with the same mass. which one would be more effective to throw at your door to close it?
a. the superball.
b. neither will work.
c. the blob of clay.
d. both the same.
Answers: 2
. Suppose that both objects hit the door at a speed of 
in the same direction. 
. The magnitude of the change in momentum will be at most 
.However, when the blob of clay hits the door, its shape would change (and it would potentially stick to the door.) In other words, its velocity becomes almost 
after the collision. The magnitude of the change in its momentum will only be around 
, which is only about 
the momentum change due to the bouncy ball.
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You are lying in bed and want to shut your bedroom door. you have a bouncy "superball" and a blob of...
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