A cart starts from rest at the top 5.0 degree incline track. If the track is 85 cm long how much time ( in seconds) do you predict that it will taje to reach the end? use 9.8m/s^2 and round to two sig fig
L = 85 m.
h = 85*sin5 = 7.41 m.
0.5g*t^2 = 7.41.
4,9t^2 = 7.41
t = 1.23 s.