Question

If a car is traveling 30 m/s slows to a stop in 20 seconds it has a acceleration of ____m/s^2​

Answer 1

`a=-1.5\ m/s^2`

Step-by-step 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,

`a=(v-u)/(t)\\\\a=(-30)/(20)\\\\a=-1.5\ m/s^2`

So, the magnitude of the acceleration of the car is
`1.5\ m/s^2` and it is decelerating.