Question

As the car starts down the slope its speed is 4 m/s After 3 seconds its speed is 22 m/s what is average acceleration?

Answer 1

We need to find the average acceleration, this is given by the next formula:

`a=(vf-vi)/(t)`

Where:

vf = final velocity

vi = initial velocity

t = time.

Hence, we can replace using:

vf = 22 m/s

vi = 4 m/s

t = 3s

Then:

`\begin{gathered} a=(22(m)/(s)-4(m)/(s))/(3s) \\ Then \\ a=6(m)/(s^2) \end{gathered}`

Hence, the average acceleration is 6 m/s²