Joseph Jogs from one end A to the other end B of a straight 300m road in 2 minutes 30 seconds and then turns around and jogs 100m back to point C in another 1 minute. What are Joseph's average speeds and velocities in jogging (a) from A to B and (b) from A to C?
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Updated on : 2022-09-05
Solution
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From pont A to B
Distance covered=300m
Displacement=300m
Time taken=2min30sec=(2×60)+30=150sec
Average speed=TimetakenDistancecovered=150300=2m/sec
Average velocity=TimetakenDisplacement=150300=2m/sec
From point A to C
Distance covered=300+100=400m
Displacement=300−100=200m
Time taken=3min30sec=(3×60)+30=210sec
Average speed=TimetakenDistancecovered=210400=1.90m/sec
Average velocity=TimetakenDisplacement=210200=0.95m/sec
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