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Physics 1.1 revision
Revision cards for NCEA Level 1 Physics 1.1 Paper
Question | Answer |
---|---|
Distance | measure of how far something has traveled or the amount of space between two or more objects |
Time | measure of how long something has been travelling for |
Speed | rate at which something moves |
Velocity | rate at which something moves in a given direction |
Acceleration | to speed up |
Deceleration | to slow down |
Distance-Time Graph | graph measuring the speed of an object |
Speed-Time Graph | graph measuring the distance an object has traveled |
Force | a push or a pull that causes an object to undergo change in direction, speed or shape |
Balanced Force | occurs when the sum of all the forces on an object equals zero and the objects motion does not change |
Unbalanced Force | occurs when the forces acting on an object are not equal casing a change in motion |
Newton | the SI unit for force |
Thrust | to push an object in a particular direction |
Mass | the amount of matter contained within an object |
Weight | the force of gravity acting on an objects mass |
Friction | the resistance an object encounters when moving over another surface |
Drag | friction that opposes the motion of an object through a fluid |
Pressure | force per unit area |
Energy | the ability to do work |
Joule | the SI unit of work and energy |
Gravitational Potential Energy | energy stored in an object due to its height above earth |
Kinetic Energy | energy of an object due to its motion |
Work | when forces move an object, resulting in the transfer of energy to that object |
Power | rate of doing work |
Watt | the SI unit for power |