P1.1.1 - Introduction to Forces

Question 1

All forces are measure in…

Answer 1

Newtons (N)

Question 2

List some examples of contact forces.

Answer 2

Friction

Air resistance

Water resistance

Normal contact force

Upthrust

Tension

Compression

Question 3

Forces always come in pairs. What do we call these pairs?

Answer 3

Interaction pairs.

Question 4

What is a force?

Answer 4

A push or a pull between 2 objects

Question 5

Which force forms an interaction pair with weight?

Answer 5

The reaction force

Question 6

The force of water pushing a boat up is called…

Answer 6

upthrust

Question 7

A force that acts without touching is called a…

Answer 7

Non-contact force.

Question 8

What do we use to measure a force?

Answer 8

Newtonmeter (force meter)

Question 9

How do we show forces acting on an object?

Answer 9

We add ‘force arrows’ to it.

Question 10

What effect can forces have on objects?

Answer 10

Change their shape (deform)

Change the direction the object moves in.

Question 11

What do we call forces that act when you touch something?

Answer 11

A contact force.

Question 12

Name the 3 non-contact forces.

Answer 12

due to gravity (weight)

due to a magnet (magnetic)

due to static electricity (electrostatic)