physics - forces

scalars

only have magnitude

examples of scalars

distance

mass

time

temperature

vectors

have both magnitude and direction

examples of vectors

velocity

displacement

acceleration

force

displacement

is the difference between the starting and ending point

acceleration

the rate of change in velocity

acceleration formula

accelaration (m/s²) = change in velocity (m/s) / time (s)

an object moving in a circle is..

accelerating

because it’s constantly changing direction

what increases with speed?

air resistance/ drag

gradient =

△v / t

/

constant acceleration

\

constant deceleration

_

velocity is constant

⎠

gets steeper

must be accelerating

where can distance be calculated

from the area under the graph

newtons first law

a resultant force is required to change the motion of an object

stationary object resultant force

= 0

moving object resultant force

= 0

carries on moving at the same velocity

newton’s second law

A resultant force will cause an object to accelerate in the direction of the force.

newtons third law

when 2 objects interact, the forces they exert on eachother are equal (magnitude) & opposite (direction)