Question

A car covers 100 m accelerating from rest in 10 seconds. What is the acceleration of the car?

• A. 3.25 s
• B. 4.12 s
• C. 3.46 s
• D. 1.41 s

Answer 1

The correct option is C

3.46 s

Using second equation of motion, s = ut +$\frac{1}{2}a{t}^2$

Given initial velocity u = 0, distance covered s=100 m and time taken t = 10 s. Let acceleration be a.

100 = 0 + $\frac{1}{2}\times a\times {10}^2$

On solving we get $a=2m{s}^{-2}$