Question

From the figure for a particle moving along positive x axis, find the ratio of average speed in first two seconds to the average speed in next four second.

please answer with explanation​

Answer 1

Answer:

c is the correct answer to the

Answer 2

Given:

Particle moves on X axis.

To find:

The ratio of average speed in first two seconds to the average speed in next four second?

Calculation:

In first 2 seconds:

$\rm avg. \: v_{1} = \dfrac{s - 0}{2 - 0}$

$\rm \implies avg. \: v_{1} = \dfrac{s }{2 }$

Now, in the next 4 seconds:

$\rm | avg. \: v_{2}| = \dfrac{0 - s}{6 - 2}$

$\rm \implies | avg. \: v_{2}| = \dfrac{s}{4}$

Now, the required ratio :

$\rm \implies avg. \: v_{1} : avg.\: v_{2} = 2 : 1$

So, ratio is 2 : 1.