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7. MOTION
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The speed-time graph for a car is shown is Fig.
$(a)$ Find how far does the car travel in the first $4,sec$. Shade the area on the graph that represents the distance travelled by the car during the period.
$(b)$ Which part of the graph represents uniform motion of the car ?
Option A
Option B
Option C
Option D
Solution
$(a)$ The shaded area which is equal to $1 / 2 \times 4 \times 6 = 12 \,m$ represents the distance travelled by the car in the first $4 \,s$.
$(b)$ The part of the graph in red colour between time $6 \,s$ to $10 \,s$ represents uniform motion of the car.
Standard 9
Science
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