George walks to a friend's house. He walks 750 meters north, then realizes he walked too far. He turns around and walks 250 meters south. The entire walk takes him 13 seconds. What is his speed per second?
Answers
Answer:
Step-by-step explanation:
speed = distance /time
= 750 + 250 / 13
=1000/13
= 76.92 (approx)
Given:
Time taken=13 seconds
Distance walked= 750m and 250m
To find:
George's speed
Solution:
George's speed is 76.92 m/s.
We can find the speed by following the given steps-
We know that the speed can be obtained by dividing the total distance traveled by the total time taken by George.
We are given that George walked 750m towards his North and walked another 250m South.
So, the total distance traveled by George=Distance traveled towards North+Distance traveled towards South
=750+250
=1,000m
The total time taken by George=13 seconds
So, George's speed=Total distance traveled/Total time taken
On putting the values, we get
George's speed=1,000/13
=76.92 m/s
Therefore, George's speed is 76.92 m/s.