Question

Give me correct answer with explanation please guys...​

Answer 1

Answer:

5.167 m/s

Explanation:

in first phase,

moving in 1 sec = 25/5 = 5m/s

in second phase,

moving in 1 sec = 21/3 = 7m/s

in third phase,

moving in 1 sec = 14/4 = 3.5 m/s

average speed = 5 + 7 + 3.5/ 3 = 15.5/3 m/s

= 5.167 m/s

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