Question

A man is standing on top of a building throws ball vertically downward with velocity 10 m/s then find velocity of ball after 2 s.​

Answer 1

u = 10m/s

g = 9.8m/s

t = 2sec

Therefore,

v = u + gt

v = 10 + (9.8*2)

v = 10 + 19.6

v = 29.6 m/s .

I hope it will help you. :D