Lesson 2 — 4.1 Speed

• Natuurkunde / Scheikunde
• Middelbare school
• havo
• Leerjaar 1

TTO 2 – Science

Period 1 — Speed

This lesson

• What is speed?
• Intro worksheet speed
• The formula for speed
• Calculating speed

Goals paragraph 4.1

• Describe what speed is.
  
• Explain the difference between steady speed and average speed
  
• Name the formula for speed and its unit.
  
• Be able to calculate speed.
  
• Know how to use the GAFC method for doing calculations

What is speed?

Two options

Objects

Two options

Objects

Two options

Objects

Two options

Objects

Stationary

(standing still)

Two options

Objects

Stationary

(standing still)

Moving

Two options

Objects

Stationary

(standing still)

Moving

How fast are they moving?

Can we think of some examples?

Examples of speed

• A car on the highway moves at a speed of 120 km/h.
  

• An average person walks at a speed of 5 km/h, which is about 1,4 m/s.
  

• Dogs can run at about 8 m/s.
  

• Airplanes fly at 925 km/h.
  

The highest speed possible in the universe?

The speed of light!

The speed of light!

• About 300 000 000 m/s

• About 300 000 km/s

• To be precise: 

      299 792 458 m / s

• In physics its is given the symbol 'c'

Worksheet speed

Discussing the worksheet

Homework

Havo: 

• Read 4.1

• Do the yellow block questions of 4.1

Vwo:

• Read 4.1

• Do question 1, 2 and 3 from the workbook 4.1