1. It takes 10 seconds for you to go to the cafeteria from the classroom and to come back. Cafeteria is 20m away East to the classroom. What is your average
velocity?

4 m/s East.

Explanation:

Velocity: This cam be defined as the rate of change of displacement. The unit of velocity is m/s.

From the question,

v = d/t Equation 1

Where v = velocity, d = displacement, t = time.

Given: d = 20 m East, t = 5 seconds.

substitute into equation 1

v = 20/5

v = 4 m/s East.

Hence the average velocity = 4 m/s East.

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s