Question

A car with a mass of 3,500lbs accelerates negatively from 35m/s to 8m/s in 8s. What is the

car's negative acceleration?

Answer 1

`a=-3.37\ m/s^2`

Step-by-step explanation:

Given that,

A car accelerates negatively from 35m/s to 8m/s in 8s.

We need to find the car's acceleration.

Initial speed, u = 35 m/s

Final speed, v = 8 m/s

Time, t = 8 s

The acceleration of an object is equal to the rate of change of velocity. So,

`a=(v-u)/(t)`

Put all the values,

`a=(8-35)/(8)\\\\a=-3.37\ m/s^2`

So, the acceleration of the car is equal to
`-3.37\ m/s^2`.