Discussion Forum

1)

The velocity-time graph of a body moving in a straight line is shown in fig. Find the displacement and distance travelled by the body in 10 seconds

Answer:

Option A

Explanation:

 

Total distance covered in 10 s = Area 1 + Area 2 + Area 3

$\frac{1}{2}\times6\times20+\frac{1}{2}\times2\times20+\frac{1}{2}\times2\times10$

= 90m

Total displacement in 10s = Area 1 - Area 2 +Area 3

$\frac{1}{2}\times6\times20- \frac{1}{2}\times2\times20+\frac{1}{2}\times2\times10$

= 50m