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Question
Boojho walks to his school which is at a distance of 3 km from his home in 30 minutes. On reaching he finds that the school is closed and comes back by bicycle with his friend and reaches home in 20 minutes. His average speed in km/h is
Options
8.3
7.2
5
3.6
MCQ
Solution
7.2
Explanation:
Average speed = `"Total distance"/"Time taken"`
= `((3 + 3)"km")/((1/2 + 1/3)"h)"`
= `6/(5/6)`
= `36/5`
= 7.2 km/h
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Average speed of a moving object is equal to the magnitude of its average velocity when it travels.
Match the following:
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