Question

In the given v-t graph, the total distance covered by the body is (A) 370 m (B) 540 m (C) 270 m (D) 900 m ​

Answer 1

Answer:

Distance covered is equal to the area under velocity-time graph.

Distance in last two seconds s2=1/2×8×2=8 m

Total distance =21/2×8×(6+2)=32 m

Fraction of the distance covered by the body in the last two seconds of its motion to total distance traveled by it in all the seven seconds is  8/32=1:4 

Answer 2

Answer:

$\frac{(20 + 40)(40 - 20)}{2} = \frac{60 \times 20}{2} = \frac{1200}{2} = 600.$

a.) 900m.