Speed time graph — lesson. Science State Board, Class 7.

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

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Let us consider a bus travelling from Chennai to Trichy. The speed of the bus is measured for every second. The speed and time are recorded, and a graph is plotted using the data. The results for six possible journeys are shown below.

Case I: Bus at rest:

Time( $s$ )	$0$	$1$	$2$	$3$	$4$	$5$
Speed( $m/s$ )	$0$	$0$	$0$	$0$	$0$	$0$

Case II: Bus travelling at uniform speed:

Time( $s$ )	$0$	$1$	$2$	$3$	$4$	$5$
Speed( $m/s$ )	$10$	$10$	$10$	$10$	$10$	$10$

Case III: Bus travelling at uniform acceleration:

Time( $s$ )	$0$	$1$	$2$	$3$	$4$	$5$
Speed( $m/s$ )	$0$	$10$	$20$	$30$	$40$	$50$

Case IV: Bus travelling at uniform deceleration:

Time( $s$ )	$0$	$1$	$2$	$3$	$4$	$5$
Speed( $m/s$ )	$50$	$40$	$30$	$20$	$10$	$0$

Case V: Bus travelling with increasing acceleration:

Time( $s$ )	$0$	$1$	$2$	$3$	$4$	$5$
Speed( $m/s$ )	$0$	$2$	$8$	$18$	$32$	$50$

Case VI: Bus travelling with increasing deceleration:

Time( $s$ )	$0$	$1$	$2$	$3$	$4$	$5$
Speed( $m/s$ )	$0$	$18$	$32$	$42$	$48$	$50$

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8. Speed time graph

Theory: