Physics - forces and motion

Formula for average speed

total distance travelled / total time taken

unit for speed

m/s

units for distance

m

units for time

s

formula for speed

distance/time

The gradient of a distance time graph

speed

curve on distance time graph

acceleration/deacceleration

how to get acceleration on distance time graph

get tangent and find gradient

flat line on distance time graph

stationary

scalar

just a magnitude

vector

a magnitude and a direction

velocity

A vector with the magnitude of the speed the object is travelling and the direction of the direction it is moving in

Displacement

The straight line length from start to end position

formula to find acceleration with: inital velocity, final velocity, distance

2as = v² - u²

formula to find acceleration with: final velocity, initial velocity, time taken

a = v-u/t

Acceleration

How quickly an object an object’s speed is increasing every second

gradient on velocity time graph

acceleration

area under the graph on velocity time graph

distance travelled

Horizontal line on velocity time graph

constant speed

diagonal line on velocity time graph

constant acceleration/deacceleration

list of contact forces

elastic, reaction, air resistance, friction, up thrust

list of non contact forces

weight (gravity), electrostatic, magnetic, strong nuclear force

if you have 4N going left and 3N going right, what is the combined force

1N left