Two balls of equal mass undergo head on collision while each was moving with speed 6 m / s. If the coefficient of restitution is (1/3), the speed of each ball after impact will be

Question

Two balls of equal mass undergo head on collision while each was moving with speed 6 m / s. If the coefficient of restitution is (1/3), the speed of each ball after impact will be (A) 18 m / s (B) 2 m / s (C) 6 m / s (D) 4 m / s

Tardigrade Admin · Accepted Answer

v =(u/2)(1-e) =(6/2)(1-(1/3)) =2 m / s

Q. Two balls of equal mass undergo head on collision while each was moving with speed $6 m / s$ . If the coefficient of restitution is $\frac{1}{3}$ , the speed of each ball after impact will be

18 m / s

2 m / s

6 m / s

4 m / s

$v = \frac{u}{2} (1 - e)$
$= \frac{6}{2} (1 - \frac{1}{3})$
$= 2 m / s$

Q. Two balls of equal mass undergo head on collision while each was moving with speed 6m/s. If the coefficient of restitution is 31​, the speed of each ball after impact will be