Question

A particle of mass m moving with velocity v collides elastically with a similar particle at rest. What is the velocity of second particle after collision?​

Answer 1

Answer:

ANSWER

Mass of first particle is m

1

=m and its velocity before collision u

1

=v

Mass of second particle is m

2

=2m and its velocity before collision u

2

=0

Let the velocity of combined system just after collision be V.

Using conservation of linear momentum :

m

1

u

1

+m

2

u

2

=(m

1

+m

2

)V

∴ (m)(v)+(2m)(0)=(m+2m)V

⟹ V=

3

v