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Course: Class 11 Physics (India) - Hindi > Unit 1

Lesson 2: Average velocity and average speed (Hindi)
Science
Class 11 Physics (India) - Hindi
Motion in a straight line (Hindi)
Average velocity and average speed (Hindi)
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Average velocity and speed with direction changes: word problems

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Problem

As shown in the figure below, Luis rushes 40m toward his truck. He notices he forgot his shoes and returns back to his house. His total travel time is 60s.
The bottom of the diagram is green. To the left side is a blue house with a red roof. To the right side is a blue truck. Between the house and the truck is a black stick figure. A grey dashed arrow labeled "40 m" points leftward from the truck to the house. A second grey dashed arrow labeled "40 m" points rightward from the house to the truck.
What is Luis’s average velocity over the 60s period?
  • Your answer should be
  • an exact decimal, like 0.75
ms
What is Luis’s average speed over the 60s period?
  • Your answer should be
  • an exact decimal, like 0.75
ms
Answer using a coordinate system where rightward is positive.
Round answer to two significant digits.