Speed-time graph for a car is shown is Fig. (a) Find how far does car travel in first 4,sec . Shade

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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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