Physics Revision Flashcards
How do you find distance
Speed X Time
How do you find speed
Distance divided by time
How do you find time
Distance divided by speed
How do speed cameras work in mordern day?
Speed cameras work by having to cameras spread out from each other and record the plate number of the car.The car will also be given a photo from the two areas and given the time and distance it will work the mph of the car to determine if its speeding or not
Acceleration
Going faster
Deceleration
Going slower
How do you find acceleration
Final speed - Initial Speed divided by time taken
How do you find final speed or initial speed
Acceleration X Time Taken
How do you find time taken
Final speed - Initial Speed divided by acceleration
How do you find pressure
Force/Weight(Neutons) divided by the area
How do you find the pressure of water
Density of water X gravitational field X depth
How do you find moment
Force(Neutons) X distance from the pivot
Atmospheric Pressure
Pressure caused by the collisions of air molecules that produce a force on an area
Average speed
The total distance travelled in the total time taken for a complete journey
Centre of gravity
The point in an object where the force of gravity seems to act
Centre of mass
The point in an object where the mass of an object seems to act
Compressed
Forced/Squashed into a smaller space
Density
The mass of a material in a certain volume
Distance-time graph
A graph that shows how far an object moves each second
Gas pressure
The force exerted by air particles when they collide with a surface
incompressible
Cannot be compressed (squashed)
Instantaneous Speed
The speed at a particular moment
Law of moments
An object is in equilibrium if the clockwise moments equal the anticlockwise moments
Liquid pressure
The pressure produced by collisions of particles in a liquid
