posted by Ceci .
A sled starts from rest at the top of a hill and slides down with a constant acceleration. At some later time it is 14.4 m from the top; 2.00 s after that it is 25.6 m from the top, 2.00 s later 40.0 m from the top, and 2.00 s later it is 57.6 m from the top.
What is the acceleration of the sled?
What is the speed of the sled when it passes the 14.4-m point?
How much time did it take to go from the top to the 14.4-m point?
How far did the sled go during the first second after passing the 14.4-m point?
Acceleration = .800 m/(s^2)
Speed passed 14.4 = 4.8 m/s
Time at 14.4 = 6 s
Distance = 5.20 m