Define: Mass
Amount of matter in a body (Scalar)
Define: Weight
Amount of gravitational force acting on ab object (vector)
Define: Gravitational field strength
Gravitational force per unit mass
Define: Gravitational field
Region in which a mass experiences a gravitational force
Define: Inertia
A bodies frequency to resist a state of rest or motion due to its mass
Define: Power
Rate of energy conversion
Define: Acceleration
Rate of change of velocity
Define: Velocity
Rate of change of displacement
Define: Displacement
Distane of the final postion from the inital position
Work done
Distance moved whe a force is applied to a body
Work
Conversion of energy
Energy
Capacity to do work
Kinetic Energy (Energy in the kinetic store)
Energy possessed by a moving body
Gravitational potential energy (Energy in the internal store)
Energy possessed by an object virtue of its height
Principal of converstion
-Energy cannot be created or destroyed
-It can onl be converted from one form to another
-Energy in a close isolated system is constant.
Principal of moments
For an object to be in equilibrium, the sum of anticlockwise moments is equal to sum of clockwise moment about the same pivot
Moments of force
Product of a force and perpendicular to the line of action of the force
Stability
An object’s ability to return to its original stare of rest after being slightly displaced
Centre of Gravity
The point on an object in which its whole weight appears to act through.
Pressure
Force per unit area
Pascal’s Principal
When a force is applied to an enclosed liquid, pressure is transferred uniformly to all parts of the lliquid
Temperature
How hot or cold an object is
Heat
Amount of thermal energy transferred from a hotter to colder region
Ice point
Temperature of pure melting ice at atmospheric pressure
