Question

answer me please........​

Answer 1

Answer: velocity =20m/s

time = 2s

Explanation:

height=s=20m

acceleration =a=10m/s2

u= 0 (free fall)

v=?

v2-u2=2as

v2-0=2×10×20

v2=400

v=20m/s

v=u+at

20=0+10t

t=2s

velocity =20m/s

time =2s