Answer carefully with reasons:a. In an elastic collision of two billiard balls is the total kinetic energy conserved during the short time of collision of the balls (i.e., when they are in contact)?b. Is the total linear momentum conserved during the short time of an elastic collision of two balls?c. What are the answer to (a) and (b) for an inelastic collision?d. If the potential energy of two billiard balls depends only on the separation distance between their centres, is the collision elastic or inelastic?[Note: We are talking here of potential energy corresponding to the force during collision, not gravitational potential energy]
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Hii friend,
● Answers with explanation-
a) No.
This is because kinetic energy is converted into potential energy.
b) Yes.
Linear momentum always remains constant in 1D motion.
c) Kinetic Energy - No, Linear Momentum - Yes.
- In inelastic collision, there's loss of energy in form of heat and sound.
- Linear momentum is conserved even here.
d) Elastic.
As PE depends upon distance between 2 centres, force must be conservative. Thus collision must be elastic.
Hope that was useful.
● Answers with explanation-
a) No.
This is because kinetic energy is converted into potential energy.
b) Yes.
Linear momentum always remains constant in 1D motion.
c) Kinetic Energy - No, Linear Momentum - Yes.
- In inelastic collision, there's loss of energy in form of heat and sound.
- Linear momentum is conserved even here.
d) Elastic.
As PE depends upon distance between 2 centres, force must be conservative. Thus collision must be elastic.
Hope that was useful.
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