Question

How can speed be calculated?

Answer 1

Explanation:

We know that speed is the time rate at which an object is moving along a path.

To calculate speed we need to use the formula such as:

1. Use the formula such as: Speed $=$Distance travelled $÷$ Time taken
2. To work out what the units are for speed, need to know the units for distance and time.
3. The SI unit of speed is meters per second or kilometers per hour.
4. Example:

Suppose: Distance$=5m$ and time $=2s$

Then according to the formula,

$Speed=\frac{Dis\tan ce}{Time}=\frac{5m}{2s}=2.5\raisebox{1ex}{$m$}\!\left/ \!\raisebox{-1ex}{$s$}\right.$

Hence, speed can be calculated by using the mathematical expression of speed.