Question

answer is 20 .... please solve this ..

the ans is given which is 20​

Answer 1

Initial Velocity of Body A (u1) = 50 m/s
Initial velocity of Body B (u2) = 0 m/s
Final Velocity Of Body A (v1) = 30 m/s
Final velocity of Body B (v2) = ?
u1+u2 = v1 +v2
50+0 = 30 + v2
50= 30 + v2
v2 = 50-30
v2 = 20 m/s
Therefore, the velocity of the second Body is 20 m/s.

Hope it helps :)