Forces

Question 1

What is a force?

Answer 1

A force is a push or a pull.

Question 2

We cannot see a force but we can see the effects of a force.

A force can…

Answer 2

1. Move a stationary object.
2. Stop or slow down a moving object.
3. Or change its direction.
4. Can change the shape of an object.

Question 3

How is force measured and what is force measured in?

Answer 3

A force can be measured using a sprin balance. The pointer of the spring balance will be at 0 when nothing is hung from the hook.
A force is measured in newtons.

Question 4

Name some non-contact forces.

Answer 4

Gravitational force
Electrical force
Magnetic force

Question 5

Name some contact forces

Answer 5

Frictional force 
Tensional force
Normal force
Applied force
Air resistance 
Spring force