Question

A car of mass $2000\text{Kg}$ is moving with a velocity of $20\text{m/s}$. If the velocity-time graph for this car is a horizontal line parallel to the time axis, then the velocity of the car at the end of $52\text{sec}$ will be

• A. $250\text{m/s}$
• B. $20\text{m/s}$
• C. $40\text{m/s}$
• D. $25\text{m/s}$

Answer 1

The correct option is B $20\text{m/s}$


As we can see that slope of v-t curve $=0$
So, velocity will be constant, which means velocity will never change.
Therefore at the end of $52\text{sec}$ velocity will remain same as that of $20\text{m/s}$