ball dropped in air at 20m/s.
why is v=20,v0=0 instead of v0=20,v=0
a=v-v0 / t
s=x0+v0xt + at2/2
The Attempt at a Solution
I know I can solve it with first finding time(I get that) a=v-v0/t making it into t=v-v0/g
but now from what I understand 20m/s is v0 is it not? can someone explain is it or is it not initial velocity, and why we don't use
but instead s=gt2/2
I know the answer is 20.4m, or maybe it's actually wrong?