Question

A car travels a total distance of 150km. At the 50 minutes mark the car has travelled 50km and at the 110 minutes the car has travelled 120km. Find the average velocity in metres per second of the car between the 50-minute mark and the 110-minute mark. Round the final answer to 2 decimal places

Answer 1

The average velocity is 19.44 m/s.

Explanation:

The average velocity between two points can be calculated with the following formula:

`\bar v=(\Delta X)/(\Delta t)=((120-50)\, km)/((110-50)\, min)=(70\,km)/(60\,min)\\\\\\\bar v=1.667(km)/(min)*(1\,min)/(60\,s)*(1000\,m)/(1\,km)=19.44(m)/(s)`

The procedure is to calculate the difference for both distance and time, and dividing the two differences, we get the average velocity.