What is the equation to calculate speed?

The equation for speed is defined as the distance traveled divided by the time taken to travel that distance. This relationship expresses how fast an object is moving. By using the formula, you can easily determine the speed by inserting the total distance covered and the time it took to cover that distance. For instance, if a car travels 100 kilometers in 2 hours, you can calculate its speed by dividing 100 kilometers by 2 hours, resulting in a speed of 50 kilometers per hour.

In understanding this equation, it’s important to note that speed is a scalar quantity, which means it only has magnitude and does not have direction. The other options provided do not accurately describe how speed is calculated in terms of distance and time, either reversing the relationship or mixing it with different physical concepts such as force and work, which are unrelated to the calculation of speed.