Physics 2023

a quantity with magnitude but no direction

a quantity that has both magnitude and direction

physical length between two points, scalar

distance between starting and final position, vector

pythagoras theorem

rate at which distance is covered, scalar

the speed of an object at one instant of time

average speed of whole journey

distance/time

divide by 3.6

multiply by 3.6

speed x time

distance/speed

the speed and direction of a moving object, vector

displacement/time

gradient = speed

time

distance

riseun

gradient = velocity

gradient = acceleration
area = distance

speed

rate of change of velocity

speeding up

slowing down

final velocity-initial velocity/time

m/s/s

An object at rest will remain this way unless it is acted upon by a force. An object that is moving will continue to move at the same speed and in the same direction unless an unbalanced force acts upon it.

inertia

An object will accelerate in the direction of an unbalanced force acting upon it. The size of this acceleration depends upon the mass of the object and the size of the force acting.

f(net)=ma

For every action force there is an equal and opposite reaction force.