Physics
- Created by: ellie_reader
- Created on: 19-05-15 20:20
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- Physics
- Stopping distance
- breaking distance
- the distance it takes from the breaks being applied to the car coming to a halt
- the breaking distance is increased the faster the vehicle is moving or the heavier its mass
- for the vehicle to slow a force needs to be applied in the opposite direction, for it to stop the momentum must equal zero
- rate of change in momentum = force applied
- can be affected by: the road surface e.g icy conditions or wet road, or the surfce of the tires
- breaking distance
- work done
- measured in Joules
- work done = force applied x how far you traveled in the direction of the force
- Elastic potential energy
- is converted to kinetic energy
- a more resistant 'stiffer' spring that is stretched the same amount as a looser string with have a greater epe
- the amount of energy in an object that is required for it to return to its natural shape once it has been re-shaped
- a material has elastic properties if when a force is applied it canges shape butit can revert back to its old shape, if it does not it has plastic properties
- Hookes law
- experiment with ruler, clampstand and weights on a sring
- on a graph the elastic potential energy is directly proportional to the force applied
- eventually the object will reach its elastic limit and can no longer return to its original shapre
- Accelleration
- speed is how far you go in any direction in a certain amount of time
- Velogicty is how far you go in a certain direction in a certain amount of time
- Accelleration is rate of change in velocity
- speed is how far you go in any direction in a certain amount of time
- forces
- mass is the amount of product there is and it stays the same wherever you are
- weight is the downward gravitational force acting on an object measured n Newtons
- Ohms Law
- v=IxR
- v=IxR
- Stars
- Nebula
- Prostar
- Main Sqquence star
- Red Giant
- Red Super Giant
- Supernova
- Black Hole
- Neutron
- Supernova
- Main Sqquence star
- Prostar
- Nebula
- Stopping distance
- Elastic potential energy
- is converted to kinetic energy
- a more resistant 'stiffer' spring that is stretched the same amount as a looser string with have a greater epe
- the amount of energy in an object that is required for it to return to its natural shape once it has been re-shaped
- a material has elastic properties if when a force is applied it canges shape butit can revert back to its old shape, if it does not it has plastic properties
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