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Center of Mass question

2020 · 8 Jan · Shift 1 · Q51

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JEE Main
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Center of Mass
2020 · 8 Jan · Shift 1 · Q51

Center of Mass question

2020 · 8 Jan · Shift 1 · Q51

JEE MainPhysicsCenter of MassNumerical+4 / −1

A body A, of mass m = 0.1 kg has an initial velocity of 3

\widehat i

ms-1 . It collides elastically with another body, B of the same mass which has an initial velocity of 5

\widehat j

ms-1. After collision, A moves with a velocity

\overrightarrow v = 4\left( {\widehat i + \widehat j} \right)

. The energy of B after collision is written as

{x \over {10}}

. The value of x is

\underline{\hspace{2cm}}

.

Numerical answer

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