Acceleration = change in velocity / change in time
xf = x0 + v0t + 1/2 a t^2 x 0 = 0 v0 = 0 xf=10 x0= original position or start v0 = original velocity at start xf = final position (10m)
10 = 1/2 a (t^2)
10 = 1/2 a (2^2)
20/4 = a a = 5 m/s^2 ACCELERATION
vf = vo +at
vf = 0 + 5m/s^2 (2 s ) = 10 m/s VELOCITY
2 seconds + 90m / 10 m/s = 11 seconds TIME TO FINISH