GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A white billiard ball moving north strikes a stationary red billiard ball resulting to the white billiard ball becoming at rest and the red billiard ball moving north. If all the kinetic energy of the white billiard ball is transferred to the red one, what type of collision is this?
A
Elastic collision
B
Inelastic collision
C
Semi elastic collision
D
Perfectly inelastic collision
Explanation: 

Detailed explanation-1: -Due to the collision of the moving billiard ball to the stationary ball, the stationary ball will be set into motion. This happens because of the momentum transfer from the moving ball to the stationary ball. The initial momentum of the moving ball will be shared by both balls after the collision.

Detailed explanation-2: -When two billiards balls collide, the bump is almost elastic. An elastic collision is one in which the kinetic energy of the system is conserved before and after the collision.

Detailed explanation-3: -When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater collision force. When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater momentum change.

Detailed explanation-4: -Or, in simpler words, the momentum and kinetic energy are conserved in the elastic collision. Therefore, when a billiard ball collides with another identical ball in an elastic head-on collision, then the kinetic energy after the crash is the same as compared before. Thus, option a is correct.

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