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JIPMER 2019
Exam
JIPMER
Year
2019
Subject
Physics
Chapter
Center of Mass, Momentum and Collision

JIPMER 2019 · Physics · Center of Mass, Momentum and Collision

One object of mass 20 kg is moving with speed 10 ~m / s in west...

One object of mass 20 kg is moving with speed 10 m/s10 \mathrm{~m} / \mathrm{s} in west direction another object of mass 10 kg is moving with 15 m/s15 \mathrm{~m} / \mathrm{s} in North direction. Both collide and stick together. Choose the correct alternative.

Options

  1. AThere K.E. is conserved as it is inelastic collision
  2. BThere K.E. is conserved on it is elastic collision
  3. CThere momentum is conserved as it is inelastic collision
  4. DThere momentum is conserved as it is elastic collision

Correct answer

C. There momentum is conserved as it is inelastic collision

Step-by-step solution

When object of mass 20 kg is moving with speed 10 m/s10 \mathrm{~m} / \mathrm{s} in west direction collide with object of mass 10 kg and stick together, hence it is perfectly inelastic collision. In inelastic collision, momentum is conserved only.
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