- #1

MattDutra123

- 15

- 0

## Homework Statement

The graph shows the variation with time t of the acceleration a of an object (graph attached).

What is the change in velocity of the object in the time interval 0 to 4s?

## Homework Equations

a = v/t

## The Attempt at a Solution

My initial answer was -8 m/s, by simply finding the area under the curve. However, the correct answer is 8 m/s (positive). I don't understand how acceleration could be decreasing if the velocity isn't. How can acceleration decrease when the velocity is increasing?