an athletic completes one round of a circular track of radius 50 m in 40 second what is the distance travelled in 80 seconds
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he can travel 628.4m in 80 seconds because
speed = distance/time taken
distance=2πr=2×22/7×50
=314.2m
speed=314.2/40=7.8m/s
when time is equal to 80 seconds
7.8=speed/80
speed=7.8×80=628.4m
speed = distance/time taken
distance=2πr=2×22/7×50
=314.2m
speed=314.2/40=7.8m/s
when time is equal to 80 seconds
7.8=speed/80
speed=7.8×80=628.4m
ranjithshankar:
it is circular track
it's ok i changed the answer
thanks
it's ok
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