How long will it take a sled to reach the bottom of a hill, if it accelerates at 5.60m/s^2 and has a final velocity at the bottom of the hill of 42.3km/h?

Answer 1

V = Vo + a*t.

V = 42300m/3600s = 11.75 m/s.
Vo = 0, a = 5.60 m/s^2, t = ?.