Question

Find the displacement

Answer 1

55.

Step-by-step-explanation:

In a velocity/time graph like this the total displacement is the area of the body.

This is the area of (from left to right) of triangle OBF + area of the 2 rectangles + area of triangle CDE

Here this is 1/2 * 2 * 5 + 5 *4 + 5 * 4 + 1/2 * 5 * 4

= 5 + 20 + 20 + 10

= 55.

Answer 2

55

Explanation:

The displacement is the area under the line

The are comprises of

• Triangle OBF + rectangle BEIF + triangle CDE

So the area is:

• 1/2*2*5 + 5*8 + 1/2*4*5 = 55