A particle P moving with speed v undergoes a head -on elastic col… - Vidyadip

MCQ

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

A
Both $P$ and $Q$ move forward with speed $\frac{v}{2}$
B
Both $P$ and $Q$ move forward with speed $\frac{v}{{\sqrt 2 }}$
✓
$P$ 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

Correct option: C.

$P$ comes to rest and $Q$ moves forward with speed $v$

c
$P$ comes to rest and $Q$ moves forward with speed $V$

If two objects of equal masses collide head on elastically, then their velocities are exchanged.

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