Question

Vishnu swims in a 90m long pool. He covers 180m in one minute by swimming from oneend to the other and back along the same straight path. Find the average speed and

average
velocity of Vishnu.

Answer 1

total distance covered by vishnu 1 minute is 180m
displacement in 1 minute is 0m
average speed=total distance by total time180/1minute180/60s=3m/s
average velocity=displacement time=0/1minute=0m/s

Answer 2

HI !

total Distance = 180 m
Displacement = 0
total time = 1 min = 60 sec

Average speed = Total distance / Total time taken
= 180/60
= 3 m/s
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Average velocity = total displacement/total time
= 0/60 = 0 m/s