Question

While traveling along a highway, a driver slows from 27 m/s to 13 m/s in 11 seconds. What is the automobile’s acceleration?

Answer 1

`a=-1.27\ m/s^2`

Step-by-step explanation:

Given that,

The initial speed of a driver, u = 27 m/s

Final speed of the driver, v = 13 m/s

Time, t = 11 s

We need to find the automobile's acceleration. We know that the acceleration of an object is equal to the change in speed divided by time taken.

`a=(13-27)/(11)\\\\a=-1.27\ m/s^2`

So, the magnitude of automobile's acceleration is
`1.27\ m/s^2`.