Question

69. Two spheres made of clay of masses 'mi' and 'my
moving along a straight line in the same direction
collide with each other. Their velocities just before
collision are ‘ui' and 'uz', respectively. After collision,
they stick together and move with the same velocity,
in the same direction, along the straight line. Find
the velocity with which they move together.​

Answer 1

Answer:

Explanation:

Here, do the two spheres stick together and move with the same velocity, in the same direction, along the straight line.

Does it mean that they have a common velocity?

Then, find the law of conservation of momentum.

Using data, total momentum of bodies before collision is equal to total momen-tum after collision in a given system.

So,$m_{1} u_{1} +m_{2} u_{2}=m_{1} v_{1} +m_{2} v _{2}$                                                 (1)

Given, that, v1=v2=v (common velocity)

Find the value of 'v' from equation (1).