Scooter Video Activity

We will learn about  average speed and learn to differentiate between average speed, constant speed and instantaneous speed

In what contexts do we discuss speed in real life?

Let's watch a video with our friends.
 

Scooter Ride Video

Video 3.1: Scooter Ride

 

Now discuss the following questions with your friends and make note of discussion points in your note book.

1. At what time did the man begin to ride his scooter?

2. At what point (kilometer) did he start his journey?

3. How long did the journey last?

4. What distance did he cover?

5. Did the scooter move at constant speed or did its speed change?

6. What was the fastest speed recorded on the speedometer?

Let us try to answer the following questions:
 

7. If the man rides the scooter at the fastest speed shown on the speedometer, what distance will he cover in an hour?

But you saw that the actual distance covered by the rider was less than this.
 

8. If you use this number (actual travel distance and time), then what distance will he cover in an hour?

Please post your answers to the question no 7 and 8 in the box given below too. 

Kinds of Speed

In case of the scooter ride we saw two measurements of speed, both of which had different values.
 

1. The speed being shown on the speedometer at any time of the journey- you call it the instantaneous speed.

2. The speed that you worked out, using the time taken and distance covered during the ride-you call it the average speed.

Reflect on our daily conversational contexts, where do we use the word speed? Do they have the same preciseness that we are seeing now?