A car travels at uniform acceleration over a distance of 440.0 m. Its final velocity after 20.0 s is 33.0 m/s. What is its initial velocity?

10. Velocity = acceleration * time = 4 * 9.81 = 39.24m/s

14. + 3.0m/s (not sure)

15. Instantaneous velocity (not sure)

18. s = 0.5 * (u+v) * t, where s=440, u = ?, v=33, t = 20

u = 11m/s

20. distance = 23 m, displacement = + 1 m

25. s = ut + 0.5*a (t^2), where s=25, u = 0, a=9.8, t?

25 = 0 + 4.9 (t^2)

t^2 = 5.102

t = 2.258 s