Question

11. A swimmer swims 300 m in still water and then returns following the same path. He takes a total of 12 minutes to come back to his initial position. Find his speed in:
(a) m s-1
(b) km h-1​

Answer 1

Answer:

@) 5/12m s-1

b) 1.5km h-1

I hope it helps

Answer 2

Distance = 300m

Time = 12min = 720sec

Speed = Distance/Time

Speed = 300m/720sec

Speed = 0.41m/s

(a) Speed is already in m/s (0.41m/s)

(b) To convert the speed m/s to km/h,we have to multiply the speed by 18/5

0.41 × 18/5

= 7.38/5

= 1.47km/h