Question

A body of mass 10 kg moving with a velocity of 10m/s collides with another body of mass 20kg moving with a velocity of 5 m/s along the same direction. After the collision, if the lighter body moves with a velocity 4m/s calculate the final velocity of the heavier body.

Answer 1

Answer: 8m/s

Explanation:

Conservation of momentum.

Momentum of 1st object 10x10= 100

Momentum of 2nd object 20x5 =100

Total momentum 200

After they collide,

Momentum of 1st object 4x10=40

Momentum remaining 160

Speed of 2nd object 160/20 = 8m/s

Answer 2

Answer:

Explanation:

Hey bro ,

Refer picture for the answer !!