What is not the use of this" keyword in Java?
O Passing itself to another method
Calling another constructor in constructor chaining
C
Referring to the instance variable when local variable has the same name
Passing itself to method of the same class
O
Answers
Explan
ANSWER
(a)No
K.E. is not conserved during the given elastic collision, K.E. before and after collision is the same. In fact, during collision, K.E. of the balls gets converted into potential energy.
(b) Yes.
Linear momentum is always conserved, no matter what.
(c) In an inelastic collision, there is always a loss of kinetic energy, i.e., the total kinetic energy of the billiard balls before collision will always be greater than that after collision.
The total linear momentum of the system of billiards balls will remain conserved even in the case of an inelastic collision.
(d) Elastic
In the given case, the forces involved are conserved. This is because they depend on the separation between the centres of the billiard balls. Hence, the collision is elas