(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A superball is to bounce elastically back and forth between two rigid walls at a distance d from each other. neglecting gravity and assuming the velocity of superball to be horizontal .Find the average force being exerted by the superball on each wall is ?

2. Relevant equations

3. The attempt at a solution

We consider rightwards direction to be positive .

If the ball moves at velocity v towards right wall then after collision it moves with velocity -v towards right.

The change in momentum of the ball is -2mv .The change in momentum of the wall is 2mv .

But we do not know the time of collision , so how do we calculate rate of change of momentum and hence force ?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Average force exerted by ball on the wall

**Physics Forums | Science Articles, Homework Help, Discussion**