Which of the following potential energy curves possibly describe the elastic collision of two billiard balls? Here r is the distance between centers of the balls:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
: The potential energy of a system of two masses varies inversely as the distance (r) between them.
When the two billiard balls touch each other, potential energy becomes zero
i.e. at r = R =2R, (v (r) =0
Out of the given graphs, only curve satisfies these conditions. Therefore, all other curves cannot possibly describe the elastic collision of two billiard balls.
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