Question

(a) How long will a stone take to fall to the ground from the top of a building 80 m high and (b) what will be the velocity of the stone on reaching the ground ? (Take g = 10 m s-2)

Solve properly. Best answer will be marked as brainliest. ​

Answer 1

Answer

a.) s=ut+0.5at

2

80=0+0.5(10)t

2

t=4 s

b.) v=u+at

=10×4=40 m/s

a ) 4s

B) 40ms^-1