Question

A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the car.

• A. 6.10 m $s^{-2}$
• B. 8.10 m $s^{-2}$
• C. 10.10 m $s^{-2}$
• D. 12.10 m $s^{-2}$

Answer 1

The correct option is B 8.10 m $s^{-2}$

using second eq of motion $s=ut+1/2a{t}^2$

as u=0, $a=\frac{2s}{t^2}=\frac{2\ast 110}{{5.21}^2}=8.10m/s^2$