Velocity- the rate of change of an object during a certain time interval . Velocity is a vector
quantity which mean it has direction as well as magnitude.
Speed- is the distance an object travels divided by the time the object was travelling. It is a
scaler quantity which means that there is no direction , therefore in other words it is the magnitude of velocity.
Mass- the quantity of matter an object contains. The mass of an object is
not dependent on gravity and therefore is different from but proportional to its weight.
Acceleration- The rate of change of velocity with respect to time.
Force of Gravity- the force of attraction between masses, the gravitational force has an infinate
Force- The capacity to do work or cause physical change.
Momentum- the product of an object's mass and its velocity.
Impulse- the product of the force exerted on an object and the time interval over which the force
Law of action-reaction- this law states that for every applied action force
there is an equal and opposite reaction force.