A soccer ball is released from the top of a smooth incline A

A soccer ball is released from the top of a smooth incline. After 4.40 s the ball travels 11.4 m. One second later it has reached the bottom of the incline. Assume the ball\'s acceleration is constant and determine its value ( m/s2). (Acceleration on Incline (Part II) will be the next question) thank you

S1 =0.5at1^2
S2 =0.5at2^2
So S1/S2 = (t1/t2)^2
or, 11.4/S = (4.4/5.4)^2
So S = 17.17066 m

Put this value in first
So a = 1.1776 m/sec2