The position-time graph of a pedestrian is given below. what is his displacement after 2.5 s?

The displacement of the pedestrian after 2.5 seconds is -10 meters.

Explanation:

Let and be position, measured in meters, and time, measured in seconds, respectively. From definition of displacement, we get that:

Where:

- Position of the pedestrian at 0 seconds, measured in meters.

- Position of the pedestrian at 2.5 seconds, measured in meters.

If and , then the displacement of the pedestrian after 2.5 seconds is:

The displacement of the pedestrian after 2.5 seconds is -10 meters.

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle