Question

149.
49. Two equal mass m, and m2
moving along the same
straight line with
velocities + 3 m/s and -5m/s
respectively
collide
elastically. Their velocities
after the collision will be
respectively :​

Answer 1

Answer:

Given : m

1

=m

2

=0.1 kg

Velocities of objects before collision : u

1

=2 m/s u

2

=1 m/s

Velocities of objects after collision : v

1

=1.67 m/s v

2

=?

Conservation of momentum : P

i

=P

f

∴ m

1

u

1

+m

2

u

2

=m

1

v

1

+m

2

v

2

OR 0.1(2)+0.1(1)=0.1(1.67)+0.1v

2

⟹v

2

=1.33 m/s

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