First slide

Coefficient of restitution

Question

A particle of mass m moving with velocity 2v collides with another particle of mass 3m moving with velocity v in the same direction. If it is perfect inelastic collision, the loss of K.E. of the system is

Moderate

A

3 / 8 mv²
B

27 / 8 mv²
C

3 / 4 mv²
D

zero

Solution

$\large \Delta KE = \frac{1}{2}\frac{{{m_1}{m_2}}}{{{m_1} + {m_2}}}{({u_1} - {u_2})^2}\\\;\\\\= \frac{1}{2} \times \frac{{m \times 3m}}{{4m}}{\left( {2v - v} \right)^2} = \frac{3}{8}m{v^2}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App