Intext activity IX — task. Science CBSE, Class 9.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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The times of arrival and departure of a train at three stations $A$ , $B$ and $C$ and the distance of stations $B$ and $C$ from station $A$ are given in Table. Plot and interpret the distance-time graph for the motion of the train assuming that its motion between two stations is uniform.

Distances of Stations $B$ and $C$ from $A$ and times of arrival and departure of the train

Station	Distance from $A$ ( $km$ )	Time of arrival ( $hours$ )	Time of departure( $hours$ )
$A$	0	08:00	08:15
$B$	120	11:15	11:30
$C$	180	13:00	13:15

Plot and interpret the distance-time graph for the train assuming that its motion between any two stations is uniform.

The formula to calculate the average speed,

$=\ {Total\ displacement} \times {Total\ time\ taken}$
$=\ {Total\ distance\ travelled} \times {Total\ time\ taken}$
$=\ \frac{Total\ distance\ travelled}{Total\ time\ taken}$
$=\ \frac{Total\ displacement}{Total\ time\ taken}$

Average speed between station A to B

$=$

$km\ h^{-1}$

Average speed between station B to C

$=$

$km\ h^{-1}$

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44. Intext activity IX

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