Question

An 20-kg object moving at 15m/s collides with a 10-kg body at rest and continues to move in the original direction but with a velocity reduced to half. What is the velocity of the second object?

Answer 1

Answer:

Given : m

1

=m

2

=1.5 kg

u

1

=2.5 ms

−1

u

2

=2.5 ms

−1

Total mass of the combined system, M=m

1

+m

2

=2×1.5=3kg

Let the velocity of the combined system after the collision be v

Applying conservation of momentum before and after the collision :

m

1

u

1

−m

2

u

2

=Mv

1.5×2.5−1.5×2.5=3v

⟹v=0

❣️plz mark me as a branlist ❣️