5. an athlete runs 5.4 laps around a circular track that is 400.0 m
long. if this takes 540 s, what is the average velocity of the athlete?
what is the average speed of the athlete over the complete
distance of the run?

Average velocity = 40 m/s

Average speed = 4 m/s

We are given;

We are required to calculate the average velocity and the average speed of the athlete.

#1. Average velocity of the athlete

In this case,

Thus;

Velocity = Displacement ÷ time

             = 160 m ÷ 40 s

             = 40 m/s

The average velocity of the athlete is 40 m/s

#2. Average speed of the athlete

Speed is a scalar quantity calculated by dividing distance by time taken.

In this case;

Total distance is 5.4 × 400 m = 2160 m

time taken is 540 s

Therefore;

Speed = Distance ÷ time

           = 2160 m ÷ 540 s

           = 4 m/s

Thus, the average speed of the athlete is 4 m/s

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

your answer would be “dry”