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Physics - Coggle Diagram
Physics
4A-gravity
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object moving same speed in a circular circuit is acc cuz velocity is changing - direction is changing
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object thrown horizontally (vertically deaccelerates then accelarates due to gravity)9horizontlly it is constant if no air restistance)
the balll is trhown - height it reaches, distance travelled horitzontally
5A-newtons laws
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newtons third law - for every action, equal or opposite reaction
inertia is affected by friction, gravity and a force
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inertia says an object at rest will remain at rest until an outside force is applied, same for an object moving
initial push to move smh is to overcome inertia, then to overcome friction (if no friction, need to overcome inertia, but then no more force needed to keep it moving at constant vel)
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6A-static electricity
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electrical charges create an electrical field (force around an electric particle that atracts/repels things around it)
charge can be - n +, mass is always +
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induction-they do not touch but being near each other they influence a movement of charge on each other
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charge an object-conduction-two objects touch and their electrons move between them to equalize the charge
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like charges repel, unlike charges attract
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6B-current electricity
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going through anything electricity meets with resitance, cuz it has to cut through the atoms of the material or move from atom to atom
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3A-velocity
displacement - how far you travelled in relation to your starting point, direction, vector
speed - how far you travel in a given time, no direction, scalar, use distance
distance - how far you traveled (or how much), no direction, scalar
velocity - how far you travel in a given time in a given direction, direction - vector, use displacement
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6A-work and power
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up a hill u do work,down the hill gravity does it
work agains friction is wasted work, uses up but gets nothing done.
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work is done when a force moves an object through displacement and the motion is in the direction of the force.
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5B-momentum n impulse
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most colllisions are inelastic, shapes of cars are changed and crashed produce sound (energy lost)
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