In this lesson, we will learn how to calculate the average speed of a particle by dividing the total distance of a journey by its total time.

Students will be able to

Q1:

The table shows the distance covered by a runner at certain times. How far did the runner travel in the first 86 seconds?

Q2:

A body, moving in a straight line, traveled 91 m at 8 m/s. Following this, it traveled at 11 m/s in the same direction for a further 13 seconds. Find the average velocity during the whole trip.

Q3:

A cyclist traveled 36.5 km from point 𝐴 to point 𝐵 at 36.5 km/h and then traveled a further 22 km in the same direction at 22 km/h. Given that n is a unit vector in 𝐴𝐵 direction, determine the cyclist’s average speed 𝑣 and average velocity v during the whole trip.

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