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JEE Main 201323 AprilOnline
Exam
JEE Main
Year
2013
Date
23 April
Mode
Online
Subject
Physics
Chapter
Center of Mass, Momentum and Collision

JEE Main 2013 · 23 April · Online · Physics · Center of Mass, Momentum and Collision

A boy of mass 20 ~kg is standing on a 80 ~kg free to move long...

A boy of mass 20 kg20 \mathrm{~kg} is standing on a 80 kg80 \mathrm{~kg} free to move long cart. There is negligible friction between cart and ground. Initially, the boy is standing 25 m25 \mathrm{~m} from a wall. If he walks 10 m10 \mathrm{~m} on the cart towards the wall, then the final distance of the boy from the wall will be

Options

  1. A15 m15 \mathrm{~m}
  2. B12.5 m12.5 \mathrm{~m}
  3. C15.5 m15.5 \mathrm{~m}
  4. D17 m17 \mathrm{~m}

Correct answer

D. 17 m17 \mathrm{~m}

Step-by-step solution

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