Acar traveling at 15 m/s starts to decelerate steadily. it comes to a complete stop in 10 seconds. what is it’s acceleration

Hello!

A car traveling at 15 m/s starts to decelerate steadily. It comes to a complete stop in 10 seconds. What is it's acceleration ?

We have the following data:

Vi (initial velocity) = 15 m/s (starts)

Vf (final velocity) = 0 m/s (stop)

t (time) = 10 s

a (acceleration) = ? (in m/s²)

We apply the data to the formula of the hourly function of the velocity, let us see:

The acceleration is -1.5 m/s² (decelerate)  

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