A particle P moving with speed v undergoes a head -on elastic collision with another particle Q of identical mass but at rest. After the collision [Roorkee 2000]

P and Q move in opposite directions with speed \[\frac{v}{\sqrt{2}}\]

Both P and Q move forward with speed \[\frac{v}{2}\]

Both P and Q move forward with speed \[\frac{v}{\sqrt{2}}\]

P comes to rest and Q moves forward with speed v

A particle P moving with speed v undergoes a head -on elastic collisio

1.	A particle P moving with speed v undergoes a head -on elastic collision with another particle Q of identical mass but at rest. After the collision [Roorkee 2000]
A.	Both P and Q move forward with speed \[\frac{v}{2}\]
B.	Both P and Q move forward with speed \[\frac{v}{\sqrt{2}}\]
C.	P comes to rest and Q moves forward with speed v
D.	P and Q move in opposite directions with speed \[\frac{v}{\sqrt{2}}\]
Answer» D. P and Q move in opposite directions with speed \[\frac{v}{\sqrt{2}}\]