# Physics

HideShow resource information
• 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
• 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
• 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
• Stars
• Nebula
• Prostar
• Main Sqquence star
• Red Giant
• Red Super Giant
• Supernova
• Black Hole
• Neutron
• 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