Two putty balls of equal mass moving with equal velocity in mutua… - Vidyadip

MCQ

Two putty balls of equal mass moving with equal velocity in mutually perpendicular directions, stick together after collision. If the balls were initially moving with a velocity of $45 \sqrt{2} \mathrm{~ms}^{-1}$ each, the velocity of their combined mass after collision is

A
$45 \sqrt{2} \mathrm{~ms}^{-1}$
✓
$45 \mathrm{~ms}^{-1}$
C
$90 \mathrm{~ms}^{-1}$
D
$22.5 \sqrt{2} \mathrm{~ms}^{-1}$

✓

Answer

Correct option: B.

$45 \mathrm{~ms}^{-1}$

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