physics paper 2 , p5 forces 1
- Created by: rachelsaunders01
- Created on: 23-03-18 19:35
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- forces
- scalar and vector
- scalar - magnitude and no direction
- time, mass, temperature and speed
- vector - both magnitude and direction
- forces, displacement,velocity,acceleration and momentum
- scalar - magnitude and no direction
- gravity
- the force responsible for the formation of galaxies
- weight is the force acting on an object
- calculating weight
- weight = mass x gravitational field strength
- wok done
- when work done against frictional forces there is a temperature increase of the object
- work done = force x distance
- when work done against frictional forces there is a temperature increase of the object
- springs
- springs can either be used in tension or compression
- compression - ball point, bed mattresses', suspensions, switches
- tension - trampolines, garage doors, newtonmeter
- springs have a store of elastic potential energy
- force = spring constant x extension
- springs can either be used in tension or compression
- contact / non contact forces
- air resistance, friction, tension normal force
- scalar and vector
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