• LOGIN
  • No products in the cart.

Profile Photo

Collision Between Two Balls

A ball A moving with a velocity 5m/s collides elastically with another identical ball at rest such that the velocity of the A makes an angle of \(30^\circ\) with the line joining the centres of the balls. Then,

(A) speed of A after collision is \(\frac{5}{2}m/s\)

(B) speed of B after collision is \((5\sqrt{3}/2)\)m/s

(C) balls A and B move at right angles after collision

(D) Kinetic energy is not conserved as the collision is not head-on
Solution:

Since the angle is \(30^\circ\), the speed of A after collision will be \(\frac{5}{2}m/s\)

The speed of B after collision will be  \((5\sqrt{3}/2)\)m/s since the speed will be \(5cos30^\circ\)

The balls A and B move at right angles after collision.

August 13, 2017

No comments, be the first one to comment !

Leave a Reply

Your email address will not be published. Required fields are marked *

© Cheenta 2017

Login

Register

FACEBOOKGOOGLE Create an Account
Create an Account Back to login/register
X