Question

A BILLIARD BALL IS MOVING WITH A SPEED OF 1.5 M/S COLLIDES WITH AN IDENTICAL, ORIGINALLY AT REST. IF THE BALL STOPS DEAD AFTER COLLISION, THEN THE SECOND BALL WILL MOVE FORWARD WITH A SPEED OF
A. 10 M/S
B. 5 M/S
C. 2.5 M/S
D. 1.0 M/S

Answer 1

Answer:

Second ball will move at the speed of 10 m/s

Answer 2

Here's your answer!

• On colliding with the body, the velocity by which the body was travelling got transferred to the second body.

• m1v1 + m1v1` = m1v2 + m1v2`, mass get cancelled.

• (1.5 m/s) + 0 = 0 + v

• v = 1.5 m/s

I guess the question was with - 5 m/s.

• It will never move with a speed of 10 m/s as the second body was initially at rest.

Hope it helps!