A glider traveling at on a frictionless air track collides elastically and head-on…

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

Problem

0.20\,\text{kg}

glider traveling at

0.80\,\text{m/s}

on a frictionless air track collides elastically and head-on with a second glider of unknown mass that is initially at rest. After the collision, the

0.20\,\text{kg}

glider reverses direction and moves at

0.20\,\text{m/s}

. What is the mass of the second glider? (a)

0.25\,\text{kg}

(b)

0.33\,\text{kg}

(c)

0.12\,\text{kg}

(d)

0.40\,\text{kg}