Question

d) A person swims 100 m in the first 40 s, 80 m in the next 40 s and 45 m in the last 20 s. What is the average speed?
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Answer 1

Explanation:

avg speed = total distance/ total time

= (100 +80+45)÷ ( 40+40+20)

= 225 / 100

= 2.25 m/s

Answer 2

Explanation:

Average speed = Total distance/ Total time taken

Average speed = (100 + 80 + 45) m / (40 + 40 + 20) s

Average speed = 225m / 100s

Average speed = 2.25 m/s