Exercise V — task. Science CBSE, Class 7.

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The odometer of a car reads $57321.0\ km$ when the clock shows the time $08:30\ AM$ . What is the distance moved by the car, if at $08:50\ AM$ , the odometer reading has changed to $57336.0\ km$ ? Calculate the speed of the car in $km/min$ during this time. Express the speed in $km/h$ also.

$Distance\ covered\ by\ the\ car$

$=$

Time taken by the car

$=$

The formula for the speed is given as

$Speed\ =$ $\frac {Distance\ travelled}{Time\ taken}$
$Speed\ =$ ${Time\ taken} \times{Distance\ travelled}$
$Speed\ =$ $\frac {1}{Time\ taken}$
$Uniform\ motion\ =$ $\frac {Time\ period}{Speed}$

On substituting the given values in the formula, we get the speed as .

$\begin{array}{l} 1 hour = i minutes \\ 20 minutes = \frac{i}{i} h \end{array}$

Thus, the speed of the car is found to be .

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5. Exercise V

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