Question

figure shows the displacement time graph of a body.what is the ratio of the speed in the first second and that in the next two seconds .
answer 2:1 ana chahiye​

Answer 1

The correct answer for this question is 2:1 .

Explanation :

• We know that if we are given with the graph of displacement vs time for a moving body , then the slope of this curve at any point will give the speed of the body at that time .
• So , in this case for time  period 0-1 sec , the slope or the speed in this time period  is :

       = $\frac{\Delta x}{\Delta t}$

       = $\frac{30}{1}$

       =  30 m/s

• And for the time period 1-3 sec i.e. for the next two sec we have the slope or the speed for this time period is :

    =  $\frac{\Delta x}{\Delta t}$

    =$\frac{30}{2}$

    = 15 m/s

• Now the ratio of the speeds in the 1st 2nd to that in the next two seconds is :

    = $\frac{30}{15}$

    =2

Hence , the ratio is 2:1

Answer 2

Answer:

Explanation:

2:1