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What type of motion is represented by the following graphs ?

Solution
$(i)$ Velocity$-$time graph is a straight line inclined equally towards the speed and time aids. Therefore, it represents uniformly accelerated motion.
$(ii)$ Velocity$-$time graph is a straight line parallel to the time axis. It represents uniform motion.
$(iii)$ Velocity$-$time graph is a straight line having a negative slope. It represents uniformly retarded motion.
$(iv)$ Velocity$-$time graph is a curve having a negative slope. It represents non-uniformly retarded motion
Similar Questions
A car is moving on a straight road with uniform acceleration. The following table gives the speed of the car at various instants of time.
Time $(s)$ | $0$ | $10$ | $20$ | $30$ | $40$ | $50$ |
Speed $\left(m s^{-1}\right)$ | $5$ | $10$ | $15$ | $20$ | $25$ | $30$ |
$(i)$ Draw the speed$-$time graph representing the above set of observations.
$(ii)$ Find the acceleration of the car.