GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In a perfectly inelastic collision, a ball dropped from a certain height would bounce
A
At a greater height
B
At the same height
C
At a lesser height
D
Would stick to the floor
Explanation: 

Detailed explanation-1: -In the real world most collisions are somewhere in between perfectly elastic and perfectly inelastic. A ball dropped from a height h above a surface typically bounces back to some height less than h, depending on how rigid the ball is. Such collisions are simply called inelastic collisions.

Detailed explanation-2: -The total kinetic energy of the system (which includes the objects that collide) is the same before and after the collision. An example of an elastic collision would be a super-bouncy ball. If you were to drop it, it would bounce all the way back up to the original height at which it was dropped.

Detailed explanation-3: -Hit and Stick: Inelastic Collision A common event is the collision of a moving object with another object in which both of them stick together after the collision. Such a collision is called inelastic because there is no bounce. Any collision in which kinetic energy is lost is inelastic.

Detailed explanation-4: -In physics, an inelastic collision occurs when some amount of kinetic energy of a colliding object/system is lost. The colliding particles stick together, and the maximum amount of kinetic energy is lost in a perfectly inelastic collision. In such cases, kinetic energy lost is used in bonding the two bodies together.

Detailed explanation-5: -People sometimes think that objects must stick together in an inelastic collision. However, objects only stick together during a perfectly inelastic collision. Objects may also bounce off each other or explode apart, and the collision is still considered inelastic as long as kinetic energy is not conserved.

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