Question #20544

Each croquet ball in a set has a mass of 0.48

kg. The green ball, traveling at 11.2 m/s,

strikes the blue ball, which is at rest.

Assuming that the balls slide on a friction-

less surface and all collisions are head-on, find

the final speed of the blue ball in each of the

following situations:

a) The green ball stops moving after it

strikes the blue ball.

Answer in units of m/s

kg. The green ball, traveling at 11.2 m/s,

strikes the blue ball, which is at rest.

Assuming that the balls slide on a friction-

less surface and all collisions are head-on, find

the final speed of the blue ball in each of the

following situations:

a) The green ball stops moving after it

strikes the blue ball.

Answer in units of m/s

Expert's answer

According to the law of conservation energy, the green ball stop moving after it strikes, the blue ball takes all kinetic energy of the green ball.

Such as the mass of the blue ball is equal to the mass of the green ball the final speed of the blue ball is equal to the initial speed of the green ball.

V = 11.2 m/s

Such as the mass of the blue ball is equal to the mass of the green ball the final speed of the blue ball is equal to the initial speed of the green ball.

V = 11.2 m/s

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