In the hare tortoise race, the hare run for 2 min at a speed of 7.5km/h, slept fo 36 min and again run for 2 min at a speed of 7.5 km/h. Find the average speed of the hare in the race.
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The average speed of hare in race is 0.138 m/s or 0.4968 km/hr.
Explanation:
= 7.5 Km/hour = 7.5 x 1000/3600 = 2.08 m/s
= distance = x t = 2.08 x 120 = 249.6 meter
Duration of sleep = = 56 min
Velocity during sleeping period = = 0 m/s
Hence = 0 meter
Now = 2 min,
= 7.5 Km/h = 2.08 m/s
= 2.08 x 120 = 249.6 meter
Total duration = = 60 min = 3600 seconds
Total distance travelled = = 499.2 meter
Hence Average speed of hare = Total distance / total duration = 499.2 / 3600 = 0.138 m/sec
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