contact and non contact forces

What is a force and what is it measured in

Force is a push or pull that acts on an object due to its interaction with another object

Measured in newtons

Is force a scaler or vector quantity and why

Forces are classed as vector quantities as it has both magnitude and direction

What is a contact force

Any force that occurs when two objects are physically touching/ making contact with each other

What type of force is friction

contact force

Is air resistance a contact or non contact force and why

It’s a contact force as an object has to come into contact with air particles in order to feel the resistance

what type of force is tension and what type of force is normal contact force

Both contact force

What is a normal contact force and what is it known as

Known as reaction force

Normal contact force -the perpendicular, or 90-degree, reaction force exerted by a surface on an object resting on it, preventing the object from passing through the surface.

What is a non contact force

a force which acts on an object without coming into physical contact with it.

non contact forces act through empty space

What are some non contact forces

Gravitational

Magnetic

Electrostatic

How are non contact force described as and why

Fields of influence around an object as forces can act on anything around that surrounding area

What is gravity

A force of attraction between 2 objects that have mass

Example earth and humans

We would still feel this force of attraction even if we are not touching the earth

What can magnetic and electrostatic forces be

Attractive or repulsive depending on the bolts of the magnet

Electrostatic forces which are between charged objects can also be attractive or repulsive

What happens to the strength of force of all non contact forces

The strength of force will decrease as objects get further apart

What type of force is weight

Non contact

Weight is the force of gravity acting on an object

Weight is a non-contact force because the Earth's gravity pulls on an object (creating its weight) without the need for any physical touching between the object and the planet