motion and pressure

distance/time

What is the equation for speed

instantaneous speed

the speed of an object at one instant of time

average speed

total distance divided by total time

Relative motion

how fast one thing is compared to another

speed

a measure of how far something travels in a particular time

distance time graph

a graph that compares time against distance is a

curve of the graph

Acceleration is shown by the

accelerating

if the speed is increasing the object is...

atomspheric pressure

the pressure caused by the weight of the atmosphere

higher the pressure

the lower you go the...

lower the pressure

the higher you go the...

water pressure

the downward push of water that increases as you go down

incompressible

Not able to be compressed or squashed. Water is...

Greater

In a balloon, the pressure is........than the atomaspheric pressure

Faster

The higher the temperature, the ...... the particles move

Gradient

Speed is shown by the....... of the graph

Still

On a distance time graph, if the line is horizontal, the object is......

Gas pressure

The collisions between air molecules and its container

The pressure increases

The smaller the container the more collisions. This means

Density

Gas has a higher..... at sea level. This is because gravity pulls more molecules towards earth, there is more gas in a certain volume

Pressure \= force/area

What is the calculation for pressure

Fulcrum

A small bar or rod on which something else turns

moment

The turning effect of a force. This depends on the force being applied and how far it is from the pivot

moment\=force x distance from the pivot

What is the equation for moments

The law of moments

An object is in equilibrium if the clockwise moments equal the anticlockwise moments. This is called....

No turning force

If the centre of gravity is above the pivot then there is

A turning force

If the entire of gravity is to the left or right of the pivot there is