Speed

Forces and Motion
Lesson 06. 
TURNING FORCES
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Slide 1: Tekstslide
PhysicsSecondary EducationAge 13

In deze les zitten 32 slides, met interactieve quizzen en tekstslides.

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Forces and Motion
Lesson 06. 
TURNING FORCES

Slide 1 - Tekstslide

How are you today?
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Slide 2 - Poll

Highlights of the Day
  • describe the effects of balanced and unbalanced forces on motion
  • calculate speed (speed = distance / time)
  • Value :  Responsibility

Slide 3 - Tekstslide

Think about...

Slide 4 - Tekstslide

timer
1:00
What is the speed limits
for cars in Cambodia?

Slide 5 - Woordweb

There are many different units of speed.
TRUE
FALSE

Slide 6 - Poll

Forces and Motion
Lesson 04. 
SPEED

Slide 7 - Tekstslide

Units of Speed
knots  ( example: 5 knots )          -  for ships
Mach   ( example: 5000 Mach)   -  for aeroplanes
kilometers per hour  (example: 5 km/hr)  - roads
miles per hour  (example: 500 miles/hr)  - roads
The problem: 
                confusion as to what will be used

Slide 8 - Tekstslide

Which of the following do scientists use as "standard unit for speed"?
A
meters per hour
B
meters per second
C
miles per second
D
miles per hour

Slide 9 - Quizvraag

In 50 meters "per" second, what does "per" mean?
A
in all
B
in each
C
multiply
D
add

Slide 10 - Quizvraag

What does "meters per second" mean?
A
the number of meters travelled in one second
B
the number of seconds in one meter
C
the number of meters in a straight line
D
one meter per one second

Slide 11 - Quizvraag

What do you mean by "5 meters per second"?
A
the object travels a distance of 15 meters in each second
B
the object travels a distance of 15 seconds in each distance

Slide 12 - Quizvraag

How do you write "meters per second"?
A
ms
B
m/s
C
msp
D
s/m

Slide 13 - Quizvraag

QUESTION TIME!

Slide 14 - Tekstslide

Calculating Speed

Slide 15 - Tekstslide

Equation for Speed

Slide 16 - Tekstslide

Slide 17 - Tekstslide

What does it mean by "average speed"?
A
The speed of an object during a journey is NOT always constant.
B
The speed of an object during a journey is always constant.

Slide 18 - Quizvraag

Steps in Calculating Speed
  • Read and analyse the problem.
  • Underline all the numbers with its units.
  • Identify the formula.
  • Identify what you the problem is looking for.
  • Substitute all the numbers and units in the formula.
  • Circle or box your final answer.

Slide 19 - Tekstslide

Practice

Slide 20 - Tekstslide

Question 1:
Marcus rides his bicycle at a speed of 5 m/s for 60s. How far does he go in this time?

Slide 21 - Tekstslide

Slide 22 - Tekstslide

Question 2:
Sofia is in a car traveling at a speed of 30 m/s. How long will the car take to travel 2100 m?

Slide 23 - Tekstslide

Slide 24 - Tekstslide

Question 3:
An aeroplane travels 3500 km in a time of 5 hours. What is the speed of the aeroplane in km/h?

Slide 25 - Tekstslide

Slide 26 - Tekstslide

Question 4:
A car travels a distance of 210 m in a time of 6s. Calculate the speed of the car in m/s.

Slide 27 - Tekstslide

Slide 28 - Tekstslide

Summary

Slide 29 - Tekstslide

Equation for Speed

Slide 30 - Tekstslide

Slide 31 - Tekstslide

Self-survey: Rate your level of understanding and participation in this lesson.
15

Slide 32 - Poll