Two identical balls A and B having velocities of 0.5 m / s and -0.3 m / s respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be -

Question

Two identical balls A and B having velocities of 0.5 m / s and -0.3 m / s respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be - (A) -0.5 m / s and 0.3 m / s (B) 0.5 m / s and -0.3 m / s (C) -0.3 m / s and 0.5 m / s (D) 0.3 m / s and 0.5 m / s

Tardigrade Admin · Accepted Answer

On elastic collision between two masses moving with finite velocities, their velocities get exchanged and they travel in opposite directions as they were initially. Hence the velocity of B is +0.5 m / s and that of A is -0.3 m / s

Q. Two identical balls $A$ and $B$ having velocities of $0.5 m / s$ and $- 0.3 m / s$ respectively collide elastically in one dimension. The velocities of $B$ and $A$ after the collision respectively will be -

$- 0.5 m / s$ and $0.3 m / s$

$0.5 m / s$ and $- 0.3 m / s$

$- 0.3 m / s$ and $0.5 m / s$

$0.3 m / s$ and $0.5 m / s$

On elastic collision between two masses moving with finite velocities, their velocities get exchanged and they travel in opposite directions as they were initially. Hence the velocity of $B$ is $+ 0.5 m / s$ and that of $A$ is $- 0.3 m / s$

Q. Two identical balls A and B having velocities of 0.5m/s and −0.3m/s respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be -

−0.5m/s and 0.3m/s

0.5m/s and −0.3m/s

−0.3m/s and 0.5m/s

0.3m/s and 0.5m/s