Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

A ball of mass 'm' moving at a spped 'v' makes a head-on collision with an identical ball at rest . The kinetic energy of the balls after the collision is three fourths of the original. Find the coefficient of restitution.

A ball of mass 'm' moving at a spped 'v' makes a head-on collision with an identical ball at rest . The kinetic energy of the balls after the collision is three fourths of the original. Find the coefficient of restitution.

Grade:12

2 Answers

pratham ashish
9 Points
11 years ago
Hi, just considr initial vel. of I ball = u final vel. of I ball = v1 final vel. of II ball =v2 & coeff. of restitution = e now, e = vel. of separaion / vel. of approach e = v2 -v1 / u => v2-v1 = eu ....(1) momentum conservation => mu = mv1 +mv2 => u = v1 + v2 ...(2) energy eqn 3/4((mu^2)/2)= 1/2*m (v1^2 + v2^2) => 3/4*(u^2) = (v1^2 + v2^2) 2*(v1^2 + v2^2)=(v1 + v2)^2 + (v2 -v1)^2 = u^2 + (eu)^2 {FROM 1& 2 } => 3/2 (u^2) = u^2 + (eu)^2 => 1/2 (u^2) = (eu)^2 => e = root(1/2)
h v
33 Points
10 years ago

thanks for the answer

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free