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CBSE Class 9 Answered

IN A HARE-TORTOISE RACE , THE HARE RAN FOR 2 MINUTES AT A SPEED OF 7.5 km/h , SLEPT FOR 56 MINUTES AND AGAIN RAN FOR TWO MINUTES AT A SPEED OF 7.5 km/h. FIND THE AVERAGE SPEED OF THE HARE IN THE RACE.
Asked by PAWAN KUMAR | 09 Jun, 2013, 12:36: PM
answered-by-expert Expert Answer
total distance covered = (2*60*7.5*1000/3600) + (2*60*7.5*1000/3600) = 500 m
total time taken = 60 min = 3600 s
 
thus average speed = 500/3600 = 5/36 m/s
Answered by | 09 Jun, 2013, 07:42: PM

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