A runner runs around a rectangle track that is 50 metres long and 20 metres wide. He runs twice around the rectangle track before returning to the starting position. Calculate his average speed and velocity if he takes 100 seconds to complete a lap around
Answer (1)
3rd Nov, 2021
The circumference of the rectangle, which is the distance travelled in one round = 2(50 m) + 2(20 m) = 100 meters + 40 meters = 140 meters.
Runs around rectangle twice = 2(140 m) = 280 m
Total Distance = 280 meter.
Total Displacement = 0 (because the runner came back to initial point)
Average speed = the distance / time taken
= 280 m / 100 s
= 2.8 m/s
Average velocity = displacement / time taken
= 0 / 100 s
= 0.
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