A body A, of mass m=0.1 kg has an initial velocity of 3^i ms−1. It collides elastically with another body, B of the same mass, which has an initial velocity of 5 ^j ms−1. After collision, A moves with a velocity →v=4(^i+^j). The energy of B after collision is written as x10 J. The value of x is _____.

A body A, of mass m=0.1 kg has an initial velocity of 3^i ms−1. It

1.	A body A, of mass m=0.1 kg has an initial velocity of 3^i ms−1. It collides elastically with another body, B of the same mass, which has an initial velocity of 5 ^j ms−1. After collision, A moves with a velocity →v=4(^i+^j). The energy of B after collision is written as x10 J. The value of x is _____.
Answer» A body $A$ , of mass $m = 0.1 kg$ has an initial velocity of $3^i {ms}^{- 1}$ . It collides elastically with another body, $B$ of the same mass, which has an initial velocity of $5^j {ms}^{- 1}$ . After collision, $A$ moves with a velocity $\to v = 4 (^i +^j)$ . The energy of $B$ after collision is written as $\frac{x}{10} J$ . The value of $x$ is _____.

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