engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Center of Mass and Linear Momentum Collisions
A ball is thrown vertically downwards from a height of 20 m with an initial velocity v0. It collides with the ground, loses 50 percent of its energy in collision, and rebounds to the same height. The initial velocity v0 is (Take g = 10 ms-2)
1
28 ms-1
2
10 ms-1
3
14 ms-1
4
20 ms-1