Exercise

What type of motion, uniform or non-uniform is exhibited by a freely falling body? Give reason for your answer.

A body goes from $A$ to $B$ with a speed of $60 {\mathrm{kmh}}^{-1}$, and then returns to the starting point with a speed of $40 {\mathrm{kmh}}^{-1}$. Find the average velocity of the body.

A boy walks from his classroom to the bookshop along a straight corridor towards north. He covers a distance of $20 \mathrm{m}$ in $25$ seconds to reach the bookshop. After buying a book, he travels the same distance in the same time to reach back in the classroom. Find average velocity of the boy.

A car is moving along a straight line $\mathrm{OP}$ as shown below. It moves from $\mathrm{O}$ to $\mathrm{P}$ in $18 \mathrm{s}$ and returns from $\mathrm{P}$ to $\mathrm{Q}$ in $6 \mathrm{s}$. What are the average velocity and average speed of the car in going from to $\mathrm{O}$ to $\mathrm{P}$ and back to $Q?$

A body is moving along a circular path of radius $R$. What will be the distance travelled and displacement of the body when it completes half a revolution?

If on a round trip you travel $6 \mathrm{km}$ and then return to home, what is your final displacement?

A body travels a distance of $3 \mathrm{km}$ towards east, then $4 \mathrm{km}$ towards north and finally $9 \mathrm{km}$ towards east. What is the total distance travelled?

A body travels a distance of $3 \mathrm{km}$ towards east, then $4 \mathrm{km}$ towards north and finally $9 \mathrm{km}$ towards east. What is the resultant displacement?