Motion

Science

acceleration

a change in velocity with respect to time

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average speed

the distance an object travels divided by total time taken

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constant speed

the rate of change of position in which, the same distance is traveled each second

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displacement

the difference between the initial and the final position of an object

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instantaneous speed

an object's speed at an instant of time

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Newtons first law of motion

if the net force acting on an object is zero, the motion of the object does not change

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Newtons second law of motion

the acceleration of an object is the net force exerted on it divided by its mass

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Newtons third law of motion

for every action, there is an equal and opposite reaction

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reference point

a place or object used to describe the position or motion of another object

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slope

the steepness of a line on a graph, equals vertical change over horizontal change

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speed

the distance an object travels per unit of time

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vector

a quantity with both a size and direction (Physics)

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velocity

speed and direction of a moving object

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