Question

From the following(V-t)graph find:
（a)displacement in 15 second.

Answer 1

Answer:

87.2m

Explaination:

To find the displacement , find the area of both the triangles add them .

We know that ,

Area of two triangles = 1/2 × height × base .

Given :

Height of first triangle = 20

Base of that triangle = 10 .

Height of second triangle = -5

Base of same triangle = 15-10 = 5

Area is first triangle = 1/2 ×20×10

= 100

Area of second triangle = 1/2 × (-5) × (5)

= -25/2

= 12.50

Adding area of both the triangles

--> (100) + (-12.80)

--> displacement = 87.2m