Question

A boy started from the home and goes to the park at the speed of 3 km/hr and returns home at a speed of 4 km/hr. Calculate the average speed and average velocity of the boy for the entire journey.​

Answer 1

Answer:

Average velocity = 0 km/hr

Average speed = 3.42 km/hr

Explanation:

Let the distance between home and school =S km

Time taken to reach school from home = $\frac{S}{3} hour$

​

Time consumed to reach home from school = $\frac{S}{4} hour$

Average speed = total distance / total time.

$\frac{S+S}{\frac{S}{3} +\frac{S}{4} }$   = $\frac{2*3*4}{3+4}$  = 3.42km/hr

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