If the displacement-time graph for a particle is parallel to displacement axis, what is the velocity of the particle ?
Infinity.
If the displacement of a body is proportional to the square of the time elapsed, what type of motion does the body possess ?
Draw displacement$-$time graphs for the following situations
$(i)$ When body is stationary.
$(ii)$ When body is moving with uniform velocity.
$(iii)$ When body is moving with variable velocity.
The velocity$-$time graph of a truck is plotted below
$(a)$ Calculate the magnitude of displacement of the truck in $15$ seconds.
$(b)$ During which part of the journey was the truck decelerating ?
$(c)$ Calculate the magnitude of average velocity of the truck.
A motor bike running at $90 \,km h ^{-1}$, is slowed down to $54 \,km h^{-1}$ by the application of brakes, over a distance of $40\, m$. If the brakes are applied with the same force, calculate $(i)$ total time in which bike comes to rest $(ii)$ total distance travelled by bike.
Give an example of a body which covers a certain distance, but its displacement is zero
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