35456215
Description
Mind Map by Emma Jackson, updated more than 1 year ago
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Created by Emma Jackson
over 2 years ago
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Physics Unit 2 : Speed, pressure and
Turning Points
- Speed is a measure of how fast something is going
- Speed is a measure of how fast an object is going
- Speed=Distance/Time
- Time=Distance/Speed
- Distance=Speed*Time
- Time=Distance/Speed
- Instantaneous speed-speed at one particular point in time
- Average speed-speed overall
- Acceleration=final speed-initial speed/time taken
- momentum=mass*velocity
- mass-momentum/velocity
- velocity=momentum/mass
- mass-momentum/velocity
- Speed=Distance/Time
- Pressure is a measure of how much force you are applying to a specific area
- Pressure=Force/Area
- Force=Pressure*Area
- Area=Force/Pressure
- Force=Pressure*Area
- Low pressure-low number of collisions of particles
- High pressure-high number of collisions of particles
- Pressure=Force/Area
- Moments are the turning effects of a force
- moment=force*perpendicular distance from pivot
- force=moment/perpendicular distance from pivot
- perpendicular distance from pivot=moment/force
- force=moment/perpendicular distance from pivot
- The Law of Moments states that an object is equilibrium
when the sum of the clockwise moments are equal to the
sum of the anticlockwise moments
- left-moment of weight acts anticlockwise
right-moment of weight acts clockwise
- left-moment of weight acts anticlockwise
right-moment of weight acts clockwise
- Centre of
gravity/Centre of
Mass-when all the
weight of an object
seems to act
through a point
- pivot-when a turning force acts in a certain direction
- moment=force*perpendicular distance from pivot
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