Answer: a = 2(S-vt)/t^2
Step-by-step explanation:
S =1/2at^2+vt
S-vt = 1/2 at^2
2(S-vt) = 2 x 1/2 at^2
2(S-vt) = at^2
2(S-vt)/t^2 = at^2/t^2
2(S-vt) / t^2 = a
a = 2(S-vt) / t^2