17. The graph given alongside shows how
the speed of a car changes with time.
(v) Find the distance travelled in first 8
hours. and write the formula.
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3
Answer:
Distance = 242.5 km
Explanation:
Distance Travelled in 8 hours = Area under v-t graph from t = 0 to t = 8
Total area = area of trapezium + area of rectangle
= (3×10 + 25×3/2) + 5×35
= 30 + 37.5 + 175
= 242.5 km
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