5.2 Average speed (Lesson 2)

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Slide 1: Diapositive
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Cette leçon contient 10 diapositives, avec quiz interactifs et diapositives de texte.

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Éléments de cette leçon

Slide 1 - Diapositive

Speed, distance & time
Speed
Time
Distance
10 km/h
1 h
10 km/h
5 h
50 km/h
3 h

Slide 2 - Diapositive

Speed, distance & time
Speed
Time
Distance
10 km/h
1 h
10 km/h
5 h
50 km/h
3 h
What do you notice?

Slide 3 - Diapositive

What do you think that the
formula should be?

Slide 4 - Question ouverte

The formula
For constant speeds, we have the following formula:



v is the speed in meters per second (m/s)
s is the distance in meters (m)
t is the time in seconds (s)
v=ts

Slide 5 - Diapositive

The formula
For constant speeds, we have the following formula:



v is the speed in meters per second (m/s)
s is the distance in meters (m)
t is the time in seconds (s)
v=ts

Slide 6 - Diapositive

Eliod Kipchoge
On October 12th 2019, Eliod Kipchoge became the first human to complete a marathon 
(42.195 km) in under 2 hours!
What was his average running
speed? 
Use 1 hour and 59 min as his
finishing time.

Slide 7 - Diapositive

What was the average running
speed of Eliod Kipchoge?

Slide 8 - Question ouverte

Slide 9 - Diapositive

For now:
Take out your Calculator and go and try to the skill trainer of 5.2

Slide 10 - Diapositive