AQA GCSE Physics - P5 - Forces
30mph Distances - ANS-Thinking = 9m, Breaking = 14m
\50mph Distances - ANS-Thinking = 15m, Breaking = 38m
\70mph - ANS-Thinking = 21m, Breaking = 75m
\Acceleration Equation - ANS-Acceleration (m/s) = Change in velocity (m/s) / Time (s)
\Air Bags - ANS-Initiate before you hit the dashboard of a car. Slows you down gradually
\Atmospheric Pressure - ANS-Created on a surface by air molecules. Decreases with height
\Breaking Distance Factors - ANS-Speed, weather, tyre condition, brake quality
\Car Speed - ANS-25m/s
\Change In Momentum Equation - ANS-Force (N) = Change in momentum (kg m/s) /
Change in time (s)
\Contact Force Examples - ANS-Friction, air resistance, tension
\Contact Forces - ANS-A force that requires 2 objects to be touching
\Crumple Zone - ANS-Area on a car designed to crumple, increasing the time it takes the car
to stop
\Cycling Speed - ANS-6m/s
\Displacement - ANS-Vector quantity. Measures distance and direction in a straight line from
A to B
\Distance - ANS-How far an object has moved. It is a scalar quantity
\Distance Time Graph Gradient - ANS-Tells you the speed
\Drag - ANS-Resistance in air or fluid
\Earth's Gravitational Field Strength - ANS-9.8N/kg
\Extension Equation - ANS-Force (N) = Spring Constant (N/m) x Extension (m)
\Floating - ANS-Depends on the density of the solid compared to the density of the liquid
\Friction - ANS-Force between 2 surfaces in contact. Acts in the opposite direction to
movement
\Inertia - ANS-The tendency for motion to remain unchanged
\Mass - ANS-The amount of 'stuff' in an object
\Moment - ANS-The turning effect of a force
\Moment Equation - ANS-Moment (Nm) = Force (N) x Distance (m)
\Momentum - ANS-How much 'oomph' an object has. In a close system it is always
conserved
\Momentum Equation - ANS-Momentum (kg m/s) = Mass (kg) x Velocity (m/s)
\Newton's First Law - ANS-If the resultant force on a stationary object is zero, the object will
remain stationary. If the resultant force on a moving object is zero, it'll carry on moving at the
same velocity
\Newton's Second Law - ANS-Acceleration is proportional to the resultant force
\Newton's Third Law - ANS-When two objects interact, the forces they exert on each other
are equal and opposite
\Non-Contact Force Examples - ANS-Magnetism, gravity, electrostatic forces
\Non-Contact Forces - ANS-A force that does not require 2 objects to be touching
\Plane Speed - ANS-250m/s
\Pressure Equation - ANS-Pressure (Pa) = Force (N) / Area (m)
30mph Distances - ANS-Thinking = 9m, Breaking = 14m
\50mph Distances - ANS-Thinking = 15m, Breaking = 38m
\70mph - ANS-Thinking = 21m, Breaking = 75m
\Acceleration Equation - ANS-Acceleration (m/s) = Change in velocity (m/s) / Time (s)
\Air Bags - ANS-Initiate before you hit the dashboard of a car. Slows you down gradually
\Atmospheric Pressure - ANS-Created on a surface by air molecules. Decreases with height
\Breaking Distance Factors - ANS-Speed, weather, tyre condition, brake quality
\Car Speed - ANS-25m/s
\Change In Momentum Equation - ANS-Force (N) = Change in momentum (kg m/s) /
Change in time (s)
\Contact Force Examples - ANS-Friction, air resistance, tension
\Contact Forces - ANS-A force that requires 2 objects to be touching
\Crumple Zone - ANS-Area on a car designed to crumple, increasing the time it takes the car
to stop
\Cycling Speed - ANS-6m/s
\Displacement - ANS-Vector quantity. Measures distance and direction in a straight line from
A to B
\Distance - ANS-How far an object has moved. It is a scalar quantity
\Distance Time Graph Gradient - ANS-Tells you the speed
\Drag - ANS-Resistance in air or fluid
\Earth's Gravitational Field Strength - ANS-9.8N/kg
\Extension Equation - ANS-Force (N) = Spring Constant (N/m) x Extension (m)
\Floating - ANS-Depends on the density of the solid compared to the density of the liquid
\Friction - ANS-Force between 2 surfaces in contact. Acts in the opposite direction to
movement
\Inertia - ANS-The tendency for motion to remain unchanged
\Mass - ANS-The amount of 'stuff' in an object
\Moment - ANS-The turning effect of a force
\Moment Equation - ANS-Moment (Nm) = Force (N) x Distance (m)
\Momentum - ANS-How much 'oomph' an object has. In a close system it is always
conserved
\Momentum Equation - ANS-Momentum (kg m/s) = Mass (kg) x Velocity (m/s)
\Newton's First Law - ANS-If the resultant force on a stationary object is zero, the object will
remain stationary. If the resultant force on a moving object is zero, it'll carry on moving at the
same velocity
\Newton's Second Law - ANS-Acceleration is proportional to the resultant force
\Newton's Third Law - ANS-When two objects interact, the forces they exert on each other
are equal and opposite
\Non-Contact Force Examples - ANS-Magnetism, gravity, electrostatic forces
\Non-Contact Forces - ANS-A force that does not require 2 objects to be touching
\Plane Speed - ANS-250m/s
\Pressure Equation - ANS-Pressure (Pa) = Force (N) / Area (m)
