Question

please find me this​

Answer 1

GIVEN:

u=0m/s

a=9.8m/s

v=?

t=?

s=20m

Now,

v2=u2 +2as

v2 =0+2*9.8*20

v2 =392

v =19.8m/s(approx)

v=u+at

t=v-u/a

=19.8-0/9.8

=2.2s

HAPPY TO HELP