A body , of mass kg has an initial velocity of m/s. It collides elastically with…

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Linear Momentum · Linear Momentum

Problem

A body

A

, of mass

m = 0.1

kg has an initial velocity of

3\hat{i}

m/s. It collides elastically with another body,

B

of the same mass which has an initial velocity of

5\hat{j}

m/s. After collision,

A

moves with a velocity

\vec{v} = 4(\hat{i} + \hat{j})

. The energy of

B

after collision is written as

\frac{x}{10}

J. The value of

x