Average Velocity

Average Velocity

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Poll

Attendance

• Present

• Absent

Lesson Objective

At the end of this lesson, students will be able to

• Calculate average speed and average velocity and distinguish between the two quantities.

Multiple Choice

The two tennis players shown in the image walk to the net to shake hands at the end of a game. What is the displacement of player A

• 5m

• -5m

• 7m

• -7m

Multiple Choice

The two tennis players shown in the image walk to the net top shake hands at the end of the game. What is the displacement of player B

• 2m

• 4m

• -2m

• 7m

Average Velocity

An object's velocity is the defined as the object's displacement per unit time

Average velocity is written as V_av

Average velocity tells us how fast an object moves, it also tells us what direction it is moving in. It is a vector quantity.

Multiple Choice

What is the SI unit of velocity

• meters

• meters per second

• second

Multiple Choice

What kind of quantity is Velocity

• Scalar quantity

• Vector quantity

Positive and Negative Velocity

• Velocity is negative if displacement is negative which means motion is taking place in the negative direction.

• Velocity is positive if displacement is positive which means that motion is taking place in the positive direction,

Head over to Microsoft Teams for a worked example

Page 51

Multiple Choice

If shanatu was able to travel 5km north in 1 hour, what was his velocity

• 5km/hour

• 5km/hr North

• 0.25km/hr North

• 0.25km/hr

Multiple Choice

A man walks 7 km East in 2 hours and then 2.5 km West in 1 hour, What is the mans velocity

• 3.16 km/h East

• 1.5 km/h East

• 1.5km/h

• 3.16km/h

Multiple Choice

A man walks 7 km East in 2 hours and then 2.5 km West in 1 hour, What is the mans speed

• 3.1667km/hr

• 2.25km/hr

• 1.5km/hr

Open Ended

You start walking from a point on a circular field of radius 0.5 km and 1 hour later you are at the same point.