Sunil Batra Solutions for Chapter: Motion, Exercise 5: Summative Assessment Revision Exercise

A train $120 \mathrm{m}$ long moving on a straight and level track with uniform speed passes a pole in $6$ seconds. Find the speed of the train. Also, find the time it will take to cross a $50 \mathrm{m}$ long bridge.

A body covers half of its journey with a speed of $60 {\mathrm{ms}}^{-1}$ and the other half with a speed of $40 {\mathrm{ms}}^{-1}$. Then find the average speed during the whole journey.

A car travelling at $20 {\mathrm{kmh}}^{-1}$ speeds up to $60 {\mathrm{kmh}}^{-1}$ in $6$ sec. What is its acceleration?

A $100 \mathrm{m}$ long train crosses a bridge of length $200 \mathrm{m}$ in $50$ seconds with constant velocity. Find the velocity.

Which of the following graph is possible?

Define acceleration.

A body ultimately stops. What can be interpreted by this statement?

Give example of a motion in which speed of a body remains constant but the body is in accelerated motion.