Question

1)
The velocity time graph of an object moving along a straight line is shown in figure
Find the net distance covered by the object in the time interval between
t = 0 to t = 8 sec. Also find the displacement in time t = 0 to t = 10 sec.
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Answer 1

The displacement of an object is equal to zero

Explanation:

• the distance covered by the object is actually equal to the area which is covered under the graph from the time interval 0 7 to the time interval 8 second. This will be an addition because the displacement is a scalar quantity.
• For the first interval from 0 to 6 second, the distance is equal to

$\frac{1}{2}$ x6x20 = 60 meter

• for the second time interval from 6 second to 8 second the distance is equal to
• $\frac{1}{2}$ x 20x 2= 20meter

• So the total distance covered is equal to 80 meter