Question

A ball of mass m travelling with velocity 5v collides with and sticks to a ball of mass 5m travelling in the same direction with velocity v. Their common velocity after the collision is:

Which one is correct..
(options)
1). 5v\6
2). 5v\3
3.). 8v\10
4.). 6v\5​

Answer 1

Answer:

It's option 2 sure sure sure sure

Answer 2

Answer:

2). 5v/3

Explanation:

m1v1+m2v2=m1v1'+m2v2'

(m1=m

m2=5m

v1=5v

v2=v)

5mv+5mv=v'(5m+m)

10mv/6m=v'

v'=5v/3