Measuring Speed

A train travelling at a speed of $108 \mathrm{km}/\mathrm{h}$ and a bus having an average speed of $30 \mathrm{m}/\mathrm{s}$. Compare the speed of the train with that of the bus.

The speed of a racing car is $60 \mathrm{m}/\mathrm{s}$. What will this speed be in $\mathrm{k}\mathrm{m}/\mathrm{h}$?

A bus covers a distance of $250 \mathrm{k}\mathrm{m}$ from Delhi to Jaipur in $5 \mathrm{h}$ and returns to Delhi in $4 \mathrm{h}$. If the average speed is $X$ $\mathrm{km}/\mathrm{hr}$ then find  the value of $X$ by rounding off to two decimal places.

Match the two columns:

Every object moves at a constant speed.

$36 \mathrm{km}/\mathrm{h} = \mathrm{\_\_\_\_} \mathrm{m}/\mathrm{s}.$

Suppose the two photographs, shown in Fig.1 and Fig. 2, had been taken at an interval of $10 \mathrm{seconds}$. If a distance of $100 \mathrm{m}$ is shown by $1 \mathrm{cm}$ in these photographs, calculate the speed of the blue car.