Question

How long would it take an object with deceleration 2m/s² to go from 10m/s to 4m/s?

Answer 1

3 seconds

Explanation:

We have the following formula:

`v=u+a\cdot t`

Where, v is the final velocity that is equal to 4 m/s, u the initial velocity that is 10 m/s, a is the acceleration that would be equal to -2 m/s^2, we replace and calculate for t:

`\begin{gathered} 4=10-2\cdot t \\ 2t=10-4 \\ t=(6)/(2) \\ t=3\text{ sec} \end{gathered}`