A sphere of mass m moving with velocity v strikes elastically with a wall moving towards the sphere with a - Physics - Laws Of Motion

Question

A sphere of mass m moving with velocity v strikes elastically with
a wall moving towards the sphere with a velocity u If the mass of
the wall is infinitely large, the work done by the wall during
collision will be
(A) mu(u+v) (B) 2mu(u+v) (C) 2mu(u+v) (D) 2m(u+v)

Vijay Shankar Yadav · Accepted Answer

Dear Student,
Work done =Change in kinetic energy=12m(v+2u)2-12mv2After collision velocity of ball becomes v+2u=2mu(u+v)
Regards

A sphere of mass m moving with velocity v strikes elastically with a wall moving towards the sphere with a velocity u. If the mass of the wall is infinitely large, the work done by the wall during collision will be (A) mu(u+v) (B) 2mu(u+v) (C) 2mu(u+v) (D) 2m(u+v)

A sphere of mass m moving with velocity v strikes elastically with a wall moving towards the sphere with a velocity u. If the mass of the wall is infinitely large, the work done by the wall during collision will be
(A) mu(u+v) (B) 2mu(u+v) (C) 2mu(u+v) (D) 2m(u+v)