Topic 1 and 2 Test Flashcards
Speed
Change in Distance over time taken.
Displacement
Interval between two locations measured along their shortest path.
Velocity
Change in Displacement over the time taken
Acceleration
Change in Velocity over the time taken
Average Velocity
Average of all Instantaneous Velocities.
Instantaneous Velocity
Velocity at any given time
Newtons 1 Law
Obejct will stay at rest or in motion unless acted upon an unbalanced/external force
Newtons 2 Law
change of momentum is directly proportional to the unbalanced force acting on that body, in the same direction.
Newtons 3 law
Every action has an equal and opposite reaction.
Conservation of Linear Momentum
With a closed system, the total momentum in any directions remains constant.
Impulse
Change in Momentum
Elastic Collision
When momentum and kinetic energy are conserved
Inelastic Collision
When Momentum is conserved, but kinetic energy is not.
Conservation of Energy
Energy can not be created or destroyed, but it can be changed form one type to another.
Work Done
Force multiplied by distance in the direction of the force.
Joule
One joule is the energy converted by a force of one Newton to move on metre.
Power
Rate of Work Done
Watt
The Unit in which Power is measured in
Newton
The unit in which Force and Weight is measured in.
Static Friction
Not moving
Dynamic Friction
Moving
Pressure
Force over Area
Pascal
The Unit in which Pressure is measured in.
Effiency
The useful energy out over the total energy in multiplied by a hundred.
Resultant Force
The sum of all the forces acting on an object
Momentum
The quantity of motion that an object has
