Forces

• Science
• Middelbare school
• vwo
• Leerjaar 1

Science at home...

How?

- Work on a complete new assignment

- It is about forces (krachten)

- Important part of physics

Which forces are there?

Why?

- you're going to built a miniature chair at the end of the year

- We're going to do research to which connection is the strongest: nails, screws, dowels or glue

Glue

Screws

Nails

Dowels

What is a force?

An interaction that will change the motion of an object when unopposed

0

What happens if one person of 50 kg landed on one side of the board, and there is a weight of 10 kg on the other side?

1. The weight would be launched very high
2. The weight wouldn't be launched
3. The weight would be launched a bit, but not high
4. both the person and the weight would be launched

What happens if one person of 50 kg landed on one side of the board, and there is a weight of 1000 kg on the other side?

1. The weight would be launched very high
2. The weight wouldn't be launched
3. The weight would be launched a bit, but not high
4. both the person and the weight would be launched

Which force interact with a chair?

Force

Force is measured in Newton

How to calculate force

Force (in Newton) = mass (in kg) x 9,81

Why 9,81??? 

Everything with mass attracts each other

The bigger the mass, the bigger the pull

Which one has more mass, the moon or the earth?

1. moon
2. earth

Which one pulls more, the moon or the earth?

1. moon
2. earth

The mass of the moon is smaller, so gravity is less

only 1,62 

How to calculate force

Force (in Newton) = mass (in kg) x 9,81

Lets try... 

Perry has a mass of 5 kg. How many Newtons act on him?

Now it's your turn!

Go to google classroom

Find the document named: "practise questions forces"

Do the questions and press :"inleveren"

How did this lesson go?

1. I didn't understand a word
2. I understood, but I find it very difficult
3. It is not easy, but it is ok
4. It went very well!