Question

Position -time(x-t) grapg of a particle moving along x-axis is as shown in the figure.The average speed of particle in time interval t=0 to t=10s is

• A. ${2ms}^{-1}$
• B. $\frac{4}{5}{ms}^{-1}$
• C. ${1ms}^{-1}$
• D. $\frac{5}{4}{ms}^{-1}$

Answer 1

The correct option is A ${2ms}^{-1}$

Average Speed $\left(v\right)=\frac{TotalDistance}{TotalTime}$

where, Time = 10 s And, Total Distance $=\frac{1}{2}\left(4\right)\times (2+10)=24m$

$\Rightarrow v=\frac{24}{10}=2.4m/s$