Question

A boy walks to school at a distance of 6km
with constant speed of 2.5 km/hr and walks
back with a
constant speed of 4 km/hr. What is the
avg. speed for the round trip?

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Answer 1

Heya!!

______________________________________

Given,

▶️Distance = 6km

▶️ Constant speed = 2.5km/hr

▶️ second Constant speed = 4km/hr

To Find:-

➡️Average speed

Calculation:-

Average speed = $\frac{Distance}{Time}$

= $\frac{6}{2.5+4}$

=$\frac{6}{6.5}$

$\boxed{1.5km}$

so,

Average speed = 1.5km

Explore more:-

Average speed:- The average speed of an object is the total distance traveled by the object divided by the elapsed time to cover that distance.

• Units = m/s

Answer 2

${\underline{\tt{\orange{Given:-}}}}$

Distance= 6 km

Constant speed= 2.5km/hr

Second constant speed= 4km/hr

${\underline{\tt{\green{Find\: 0ut:-}}}}$

Average speed

${\underline{\tt{\red{Know:more:-}}}}$

Rate of change of position of a body with respect to time is known as its speed. In the other word the distance traversed by a body is in unit time is its speed. In the case of speed we have not mention any direction. So speed is a scalar quantity.

${\underline{\tt{\pink{Calculation:-}}}}$

${\implies{\tt{Average \: speed= \frac{Distance\: traversed}{Time}= \frac{s}{t}}}}$

${\implies{\tt{\frac{6}{2.5 + 4}}}}$

${\implies{\tt{ 1.5 km}}}$

$\large\underline{\underline{\boxed{\mathtt{\color{orange}{Average \: speed = 1.5 km}}}}}{\color{pink}{\bigstar}}$