Question

a ballon rising vertically with a velocity of 5m/s drops a body from a height of 20 m above the ground. the velocity of the body 1 sec. after release is​

Answer 1

u1=5m/s

a=_10m/s^2

t=1s

v=u+at

5_(10)(1)

5_10

_5

that means 5m/s downward