Question

A car starts from rest and after 20 seconds it's velocity becomes 108km find the acceleration of the car

Answer 1

1.5 km/s²

Step-by-step explanation:

Given that:

a car starts from rest; it means the initial velocity (u) = 0 km/hr = 0 m/s

after time (t) = 20 seconds

the final velocity = 108 km/hr = 30 m/s

The acceleration (a) of the car can be determined by using the formula:

`a = (v-u)/(t)`

`a = (30\ m/s -0 \ m/s)/(20 \ s)`

`a = (30 \ m/s)/(20 \ s)`

a = 1.5 km/s²