Question

A boy swims 200 m in still water and then returns back to the point of start in total 10 minutes find the speed of his swim in (i) m s-1 (ii) km h -1

Answer 1

Answer:

Step-by-step explanation:

Swim 200m up and 200m down in still water in 10 minutes.

400 meters in 10 minutes i.e. 40 meters per minutes. Multiply by 60 (minutes in hour) and divide by 1000 (mtr per km) so it will be speed in kmph

A. 40*60/1000= 2.4 kmph.

B. 2.4*1000/3600= 2/3 m/s