A smooth steel ball of mass travelling at collides elastically with a stationary…

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

A smooth steel ball of mass

0.30\,\text{kg}

travelling at

8\,\text{m}\,\text{s}^{-1}

collides elastically with a stationary brass ball of unknown mass

M

on a horizontal table. After impact the steel ball continues in the same direction with a speed of

2\,\text{m}\,\text{s}^{-1}

. The value of

M

is: (a)

0.48\,\text{kg}

(b)

0.18\,\text{kg}

(c)

0.30\,\text{kg}

(d)

0.23\,\text{kg}