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accelaration

rate of change in velocity over time.

action force

force acting in one direction

average speed

the total distance traveled divided by the time it takes to travel that distance

inertia

the tendency of an object to resist any change in its motion

law of convervation of momentum

momentum of any isloted system always remains the same

momentum

a property of all moving objects

motion

change in position

newton

the SI unit of force

reaction force

force acting in the opposite direction

speed

distance travelled per unit time

velocity

speed and direction