Question

A car travels 43 km in 56 minutes.

What is its average speed in km/h?
Give your answer rounded to 1 decimal place.

Answer 1

`\displaystyle v=46.07\ Km/h`

Explanation:

Speed

The speed is the ratio between the distance x traveled by an object and the time t taken.

`\displaystyle v=(x)/(t)`

The car travels x=43 Km in t=56 minutes. We are required to express the speed in Km/h. The time needs to be expressed in hours:

`t = 56 / 60 = 0.933\ h`

Now apply the formula:

`\boxed{\displaystyle v=(43)/(0.933)=46.07\ Km/h}`