Question

a boy swims 200m in still water and then returns back to the point of start in total 10 minutes find the speed of his swim and metre per second and kilometre per hour​

Answer 1

Answer:

Speed

=Distance swum/Time

= 400m/600s

=0.67m/s

=2.4km/hr

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Answer 2

Step-by-step explanation:

distance = 400 m , time = 10 min = 600second

speed = distance/time

s = 400/600

s = 2/3 m/s or 0.66 m/s

and also,

To convert into km/h we multiply with 18/5

then , s = 2/3 x 18/5

s = 12/5

s = 2.4 km/h