scalars/vectors + non-contact/contact forces

What are the two types of quantities?

scalar + vector

What is a scalar quantity? What are some examples?

A quantity that only has a magnitude

Ex. mass, distance

What are vector quantities? What is important to remember about vectors?

A quantity with both a magnitude + associated direction

When stating a vector quantity, you have to mention direction and magnitude ex. 60km/h in a westerly direction

What are examples of a vector quantity?

displacement, velocity, weight, acceleration, momentum, force

How are vectors represented in diagrams?

with an arrow

how does an arrow represent a vector quantity?

• length of arrows represents the magnitude of the vector

• the direction the arrow points show direction of vector

in what unit is the magnitude of a force measured in?

newtons

how is a force defined?

a push or pull that acts on an object due to an interaction of an object on another

how can a force have an effect on bodies?

changing speed, direction or shape of the body

what is the condition of a force being contact?

the force acts between two objects that physically touch

what are some examples of contact forces?

friction, air resistance, tension and reaction force

what is thrust?

where the force that causes an object to move

what is upthrust?

the fore of a fluid pushing an object upwards (which makes it float)

what is compression?

forces that act inward on an object

what is tension?

the force transmitted through a cable or string when it is being pulled on by forces at the opposite ends

what is electrostatic force?

the force between two charged objects

What is another name for air resistance?

drag

how do non-contact forces work

the force acts a distance due to the action of a field rather than any contact

what are examples of non-contact forces?

gravitational attraction, electrostatic force, magnetic force

what is reaction force?

a force due to contact between two objects