Question

When two marbles collide, their total momentum before collision is equal to.

• A. the difference in their momentum after collision.
• B. the average of their momentum after collision.
• C. the square of the sum of their momentum after collision.
• D. their total momentum after collision.

Answer 1

The correct option is D

their total momentum after collision.

1. According to the law of conservation of momentum, in the absence of a net external force, the total momentum before the collision is equal to the total momentum after the collision.
2. When two marbles collide, their total momentum before collision is equal to their total momentum after collision.

Hence option D is correct.