Solution 11DQ

Introduction

In all cases the velocity before and after collisions are calculated. So we will just calculate the relative velocities and see how the magnitude changes. We will also see how the direction changes before and after collision.

Step 1

In example 8.10 the initial velocity of the block A and B are

 and

Hence the relative velocity B with respect to A is

And the final velocities are

 and

Hence the relative velocity of B with respect to A in after collision is

.

Hence the magnitude remain same.