Mht Cet
Center Of Mass
MHT CET 2019 2nd May Evening Shift
MCQ+1 / -02019
A block of mass ' $m$ ' moving on a frictionless surface at speed ' $v$ ' collides elastically with a block of same mass, initially at rest. Now the first block moves at an angle ' $\theta$ ' with its initial direction and has speed ' $v_1$ '. The speed of the second block after collision is