Time for Jack or Jill = 2 min(60s/1min) + 19.5 s = 139.5 seconds
Then, the average speed for each:
Average speed of Jack = 9(25 m)/139.5 s = 1.613 m/s
Average speed of Jill = 10(25 m)/139.5 s = 1.792 m/s
The average speed and average velocity would just have the same magnitude, so they are equal.
Further Explanation:
Average speed :
The average speed of an item is the all out separation gone by the article partitioned by the slipped by time to cover that separation. It's a scalar amount which means it is characterized uniquely by extent. A related idea, normal speed, is a vector amount. A vector amount is characterized by extent and bearing.
Difference between average speed and average velocity:
Average speed is a scalar amount, while average velocity is a vector amount. Average speed considers the complete separation voyaged, while Average velocity is worried about the relocation between two.
How you discover average speed:
Partition the complete separation gone by the all out time spent voyaging. This will give you your average speed. S = 56.67 {\display style S=56.67}. So if Ben voyaged 50 mph for 3 hours, 60 mph for 2 hours, and 70 mph for 60 minutes, his average speed was around 57 mph.
Subject: physics
Level: college
Keywords: Average speed, Difference between average speed and average velocity, How you discover average speed.
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