Question

How long will it take a car to go from 0 to 45 km/hr if they are accelerating at 5 km/hr/s?

Answer 1

9 seconds

Step-by-step explanation:

`acceleration = (final \: speed - initial \: speed)/(time \: taken)`

`5km/ hr/ s = (45 - 0 (km/ h))/(t)`

cross multiplying

`5t = 45 secs \\ t = 9 \: secs`

it will take 9secs for the car to go from 0 to 45 km/ h