A body starts from rest and travels with a uniform acceleration of 30 m/s². Calculate the time taken by the body to cover a distance of 80 m.

Given that:

Acceleration a = 30 m/s²

Distance travelled s= 80 m

Initial Velocity  u = 0

To find the time taken (t) to cover 80 m:

Equation of motion states that:

s = ut + ½ at²

$80=0\times \mathrm{t}+\frac{1}{2}\times 30\times {\mathrm{t}}^2$

80 = 15t²

Time taken 

t = 2.30 sec