Question

A position-time graph is shown for a motorcycle driving south.

According to the graph, what is the motorcycle’s average velocity?

A) 5 km/h south
B) 24 km/h south
C) 120 km/h south
D) 150 km/h south

Answer 1

the answer is B 24 km/h south

Answer 2

B) 24 km/h south

Step-by-step explanation:

The average velocity of the motorcycle is given by:

`v=(\Delta p)/(\Delta t)`

where

`\Delta p` is the displacement (variation in position)

`\Delta t` is the time interval

From the graph, we observe that:

`\Delta p = 150 km - 30 km = 120 km`

`\Delta t = 5 h - 0 h=5 h`

So, the average velocity is

`v=(120 km)/(5 h)=24 km/h`

And the direction is south, since the motorcycle is moving south.