The answer is going to be D
Answer:
Step-by-step explanation:
acceleration, a = 20 m/s^2
initial velocity, u = 0 since it starts from rest
final velocity, v = 400 m/s
v = u + at
400 = 0 + 20 t
400 = 20 t
t = 400 / 20
<u><em>t = 20 sec</em></u>
Hope this helps
plz mark as brainliest!!!!
I don't know this. Sorry. Good luck
He needed to divide instead of subtracting it on the last step.
