Question

Select One Option Correct from the following : Statement 1: In an elastic collision between two bodies, the relative speed of the bodies after collision is equal to the relative speed before the collision. Statement 2: In an elastic collision, the linear momentum of the sys- tem is conserved.
(A)Statement 1 is true, statement 2 is true; statement 2 is a correct explanation for statement 1.
(B)Statement 1 is true, statement 2 is true; statement 2 is not a correct explanation for statement 1.
(C)Statement 1 is true, statement 2 is false.
(D)Statement 1 is false, statement 2 is true.

Answer 1

I think option A. is correct......

Answer 2

Yes it's very much true and it can be proved as

As we know that in this collision process, mass is conserved.

And also the momentum is conserved in the collision( by the statement of law of conservation of momentum)

As we know in the case before collision:-

m1v1=p1

And in the after collision :-

m2v2= p2

where m1 and m2 are equal

also p1 and p2 are equal so v2 and v1 must be equal.