Question

A stationary iron sphere of radius 'r' was hit by another iron sphere of
radius "2r' moving with 36 ms, After collision if they stick together, then
common velocity is
1) 32 ms-1
2) 16 ms-1
3) 8 ms -1
4) 24 ms ​

Answer 1

Answer:

2) 16 ms-1

which is because A stationary iron sphere of radius 'r' was hit by another iron sphere of

radius "2r' moving with 36 ms, After collision if they stick together, then

common velocity is