A boy takes 15 minutes to go from his house to school and 10 minutes for return journey. Distance between school and house is 4 Km. Calculate average speed and average velocity.
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Answer:
average speed=19.2km/hr
average velocity=0km/hr
Reason:
total distance covered=8km
total time taken=25 minutes
therefore distance travelled in 1 hour(60min=25×2.4)= 8×2.4=19.2 in one hour
therefore average speed=19.2
Now,
As total displacement from going
to school and return=0
implies average velocity=0.
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