Answer:
[tex]a=-1.5\ m/s^2[/tex]
Explanation:
Given that,
Initial velocity, u = 30 m/s
Final velocity, v = 0
Time, t = 20 s
We need to find the acceleration of the car. The rate of change of velocity is equal to acceleration. So,
[tex]a=\dfrac{v-u}{t}\\\\a=\dfrac{-30}{20}\\\\a=-1.5\ m/s^2[/tex]
So, the magnitude of the acceleration of the car is [tex]1.5\ m/s^2[/tex] and it is decelerating.
