Studied by 0 peopledistance/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
Note
Flashcard