Two spheres moving in opposite directions with velocities u1 and u2 collide will each other. If e is the coefficient of restitution, their distance of separation at time ‘t’ after collision is
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a
u1−u2et
b
u2−u1 et
c
u1+u2 et
d
u1u2 et
answer is A.
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Detailed Solution
v2−v1u1−u2=e vel. of separation vel. of approach v2−v1=eu1−u2Separation after timet,v2−v1t=eu1−u2tAs v1 and v2 are opposite direction