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4.7 Q


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A 0.15-kilogram baseball moving at 20 m/s is stopped by a catcher in 0.010 seconds. The average force stopping the ball is: 

(A) 3.0x10^-2 N

(B) 3.0X10^0 N

(C) 3.0X10^1 N

(D) 3.0X10^2 N


The explanation says that it takes 0.010 seconds for the baseball to accelerate from 0 m/s to 20 m/s, but that doesn't really match up with the question... Is the wording a little weird?

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