Question

Suppose a car can accelerate from rest to 200 km/h in 10 s. What is its acceleration?

Answer 1

Given:

$v_i=0\:\rm m/s$

$v_f=200\:\rm km/hr=55.6\:\rm m/s$

$t=10\:\rm s$

The acceleration of a car

$$a=\frac{v_f-v_i}{t}=\frac{55.6-0}{10}=5.56\:\rm m/s^2$$