APFIVE Horizontal Projectile Motion and Free Fall
A ball is thrown horizontally from a height of 15 m with an initial speed of 12 m/s. Simultaneously, a second ball is dropped from rest from the same height. What is the distance between the two balls at the instant the second ball strikes the ground?
A
0 m
B
21 m
C
12 m
D
42 m
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