S K Sharma Solutions for Chapter: Motion, Exercise 3: UNSOLVED NUMERICALS FOR PRACTICE

A bus starts from rest and attains $40 \mathrm{km} {\mathrm{h}}^{-1}$ velocity after $10$ seconds. Calculate the acceleration of the bus in (i) $\mathrm{km} {\mathrm{h}}^{-2}$ (ii) $\mathrm{m} {\mathrm{s}}^{-2}$.

A bus moving with a velocity of $60 \mathrm{km} {\mathrm{h}}^{-1}$ is brought to rest in $20$ seconds by applying brakes. Find its acceleration.

A car is retarded by applying brakes at a rate of $2 \mathrm{m} {\mathrm{s}}^{-2}$. It is finally stopped in $10 \mathrm{s}$. Find its initial velocity.

A train moving with velocity of $54 \mathrm{km} {\mathrm{h}}^{-1}$ is accelerated so that its velocity becomes $72 \mathrm{km} {\mathrm{h}}^{-1}$ in $15$ seconds. Find the acceleration of the train.