A truck that is initially at rest travels 90 m in 9 seconds and continues in this manner. If the body moves with uniform acceleration, what is its acceleration?

Given s = 90 m, t = 9 sec, u = 0 m/s

The following is the equation of motion that connects displacement, initial velocity, and time:s = ut + ½ at²

When the given values are substituted, the above equation becomes

$90=0\times 9+\frac{1}{2}\mathrm{a}\times 9^2$

$90=9+40.6a$

a = 1.99 m/s²