A bus travels a distance of 20 km from Chennai Central to Airport in 45 minutes.
i) What is the average speed?
ii) Why does the actual speed differ from the average speed?

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Solution

i) Average speed = $\frac{T o t a l D i s t a n c e}{T o t a l T i m e}$

= $\frac{20 k m}{0.75 h}$

= $\frac{80}{3}$ km/h

ii) Average speed is total distance covered per unit time while actual speed is speed of the body at a particular instant.

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A bus travels a distance of 20 km from Chennai Central to Airport in 45 minutes.i) What is the average speed?ii) Why does the actual speed differ from the average speed?

i) Average speed = TotalDistanceTotalTime = 20km0.75h = 803km/hii) Average speed is total distance covered per unit time while actual speed is speed of the body at a particular instant.

A bus travels a distance of 20 km from Chennai Central to Airport in 45 minutes.
i) What is the average speed?
ii) Why does the actual speed differ from the average speed?

i) Average speed = $\frac{T o t a l D i s t a n c e}{T o t a l T i m e}$

= $\frac{20 k m}{0.75 h}$

= $\frac{80}{3}$ km/h

ii) Average speed is total distance covered per unit time while actual speed is speed of the body at a particular instant.