George walks to a friend's house. He walks 850 meters north before he realizes he walked too far. He turns around and walks 250 meters south. The entire walk takes 25 seconds. What is George's
velocity in m/s?

Explanation:

In this problem we are expected to calculate the velocity of Georges movements.

Given data

Total distance covered by  George= 850+250= 1100 meters

Time taken  by  George to cover the total distance= 25 seconds

We know that velocity is, v= distance/ time

Therefore substituting our data into the expression for velocity we have

v= 1100/ 25= 44 m/s

Hence the velocity in m/s is 44

the higher the current the higher the mag field around it the higher the influence on the compass

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it