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Question: Answered & Verified by Expert
A particle of mass $m$ is projected with velocity $v$ making an angle of $45^{\circ}$ with the horizontal. When the particle lands on the level ground the magnitude of the change in its momentum will be
PhysicsCenter of Mass Momentum and CollisionNEETNEET 2008 (Mains)
Options:
  • A zero
  • B $2 m v$
  • C $m v / \sqrt{2}$
  • D $m v \sqrt{2}$
Solution:
2886 Upvotes Verified Answer
The correct answer is: $m v \sqrt{2}$
Momentum change $=2 \mathrm{mv} \sin \theta$

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