A car traveling at 45 km/h starts to brake, and comes to a stop over a distance of 18 m. Calculate the acceleration of the braking car.

Acceleration,

Explanation:

Given that,

Initial speed of a car, u = 45 km/h = 12.5 m/s

Final speed, v = 0 (as they comes to rest)

Distance, d = 18 m

We need to find the acceleration of the breaking car. Using third equation of motion as follows :

So, the acceleration of the braking car is .

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