Ball A rolls at a constant speed of .25 m/s on a table 0.95 m above the floor, a

Question

Ball A rolls at a constant speed of .25 m/s on a table 0.95 m above the floor, and ball B rolls on the floor directly under the first ball and with the same speed and direction.

(a) When ball A rolls off the table and hits the floor, which of the following is true?
a. Ball B is ahead of ball A.
b. Ball B collides with ball A.
c. Ball A is ahead of ball B.

Why?

(b) When ball A hits the floor, how far from the point directly below the edge of the table will both balls be?
ball A ______ m
ball B ______ m

Explanation / Answer

for ball A

v*t = x

and

0.95 = 0.5 g t^2

t = 0.44 s

there is no accelaration on both balls in horizontal direction

answer is b

the horizontal distance =  v*t

= 0.11 m

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