Speed

A man standing on a platform $225 \mathrm{m}$long notices that a train travelling at a uniform speed him in $6 \mathrm{s}$ and passes by the platform in $21 \mathrm{s}$. Find (i) the length of the train and (ii) the speed of the train. 

If a scooterist drives at the rate of$24 \mathrm{kmph}$, he reaches his destination $5 \mathrm{minutes}$ too late; if he drives at the rate of $30 \mathrm{kmph}$, he reaches his destination$4 \mathrm{minutes}$ too soon. Then his destination is at a distance of 

What is speed and time?

The formula of speed is distance upon time. Why?

The sound from the volcano was heard $4780 \mathrm{km}$ away. If the speed of sound is $330 \mathrm{m} {\mathrm{s}}^{-1}$, how long would it have taken the sound to travel this distance?

The Voyager space probes carry a Golden Record, which has pictures and sounds from Earth on it. The record is intended for any life-form that finds it in the future. In $2010$, the Voyager $1$ probe was $17$ billion $\mathrm{km}$ from the Sun and in $2018$ it was $21$ billion $\mathrm{km}$ from the Sun. How fast is the Voyager $1$ probe traveling?

If an object travels unequal distances at equal intervals of time, then the object is said to be in uniform motion.

The average cycling speed is $15 \mathrm{km}/\mathrm{h}$. Calculate how far you would be able to cycle in each city before it becomes harmful.

A cyclist travels at $12 \mathrm{km}/\mathrm{h}$ for $5 \mathrm{km}$ and then he turns around and cycle back $1 \mathrm{km}$. The whole journey takes $30$ minutes. What was the cyclist's average speed?

If a cyclist travels at an average speed of $15 \mathrm{km}/\mathrm{h}$, how far can she go in $20$ minutes?

A car covers a distance of $360$ kilometer in $6$ hours, what will be its average speed in kilometer per hour and meter per second?

S.I. unit of speed is-

Which of the following has only magnitude but no direction?

Suppose we were to draw a graph of acceleration on the Y axis and time on the X axis and the graph would be a straight line making an angle of 45 degrees with the X axis. Suppose we were to calculate the area under this curve, it would have the dimensions of______.

Define average speed.

A cyclist covers $14\frac{2}{5} \mathrm{km}$ in $2\frac{1}{4} \mathrm{hours}$. What is the speed of the cyclist?