Question

The graph below represents motion of a car. the displacement of the car is 20 seconds is​

Answer 1

this is the answer to your question

Answer 2

Given:

Velocity-time graph is given.

To find:

Displacement in 20 seconds ?

Calculation:

• Displacement is calculated as NET AREA UNDER V-T GRAPH.

• Let displacement be 'd':

• Net area will be Area(Left Trapezium) - Area(Right Trapezium)

$\rm d = \{ \dfrac{1}{2} \times (12 + 6) \times 10 \} - \{ \dfrac{1}{2} \times (8 + 6) \times 10 \}$

$\rm \implies d = \{ \dfrac{1}{2} \times 18 \times 10 \} - \{ \dfrac{1}{2} \times 14 \times 10 \}$

$\rm \implies d = \dfrac{180}{2} - \dfrac{140}{2}$

$\rm \implies d = 90 - 70$

$\rm \implies d = 20 \: m$

So, net displacement is 20 metres.