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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A body of mass M at rest explodes into three pieces, two of which, of mass M/4 each, are thrown off in perpendicular directions with velocities 3 m/s and 4 m/s respectively. The third piece will be thrown off with a velocity of

Answer: (C)

Solution

Momentum of the two known pieces: (M/4)(3) and (M/4)(4), perpendicular; resultant = (M/4)√(3²+4²) = (M/4)(5) =

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Question ID VK-153288