Question

A sphere of mass 2kg moving with a velocity collides elastically with another

sphere which is at rest. After collision, the first sphere moves in the same

direction with its velocity reduced to one third if its initial velocity. The mass of

second sphere is

1) 2 kg 2) 3 kg 3) 1kg 4) 5 kg​

Answer 1

Answer:

2kg

Explanation:

2v +0 = 2v/3 + mu

u- v/3 = v ( velocity of approach equal velocity of sepration)

u= 4v/3

m=2 kg

Answer 2

Answer:

2kg

Explanation:

this is the answer of this question