R P Goyal and S S Shome Solutions for Chapter: Motion, Exercise 1: TEST YOURSELF

Name the type/types of motion being performed by each of the following: Smoke particles from chimney.(periodic motion/non-periodic motion)

Name the type/types of motion being performed by each of the following: A spinning top.(rotatory motion/curvilinear motion)

State the type of motion of the needle of a sewing machine. (Periodic motion/ Rotational motion)

A cyclist travels a distance of $1 \mathrm{km}$ in the first hour, $0.5 \mathrm{km}$ in the second hour and $0.3 \mathrm{km}$ in the third hour. Find the average speed of the cyclist in $\mathrm{m} {\mathrm{s}}^{-1}$.

A car travels with speed $30 \mathrm{km} {\mathrm{h}}^{-1}$ for $30$ minutes and then with speed$40 \mathrm{km} {\mathrm{h}}^{-1}$ for one hour.
Find the total time of travel.

A car travels with speed $30 \mathrm{km} {\mathrm{h}}^{-1}$ for $30 \mathrm{minutes}$ and then with speed $40 \mathrm{km} {\mathrm{h}}^{-1}$ for $\mathrm{one} \mathrm{hour}$.
Find the average speed of the car.

On earth the weight of a body of mass $1.0 \mathrm{kg}$ is$10 \mathrm{N}$. What will be the weight of a boy of mass $37 \mathrm{kg}$in $\mathrm{N}$ ?

The weight of a body of mass $6.0 \mathrm{kg}$on moon is $10 \mathrm{N}$. If a boy of mass $30 \mathrm{kg}$ goes from earth to the moon surface, what will be his weight ?