Vocab List 1 Flashcards
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acceleration is proportional to resultant force, F=ma o F -delta p/ delta t
Newton’s Second Law of Motion
vector
quantity which has both magnitude and direction
velocity
rate of change of displacement with time v = delta s/delta t. A vector quantity that can also be considered as speed in a specified direction. Velocity may also be determined from gradient of a displacement-time graph. If the velocity of an object changes during a period of time t, the initial velocity is given symbol u and final velocity is given the symbol v.
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average (speed) defined as distance traveled/time taken, v = delta s/delta t. Instantaneous speed is determined over short period of time during which it is assumed speed does not change. It may also be determined from the gradient of a distance-time graph. It is a scalar quantity, but can be compared to velocity.
speed
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Whenever one body exerts a force on another body, the second body exerts exactly the same force on the first body, but in the opposite direction.
Newton’s Third Law of Motion
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units of measurement that are not defined as combinations of other units
fundamental units
displacement, x
distance from a ferference point in a specified directio; a vector quantity
precision
a measurement where a similar result would be obtained if the measurement was repeated (small random errors)
Newton’s Third Law of Motion
Whenever one body exerts a force on another body, the second body exerts exactly the same force on the first body, but in the opposite direction.
speed
average (speed) defined as distance traveled/time taken, v = delta s/delta t. Instantaneous speed is determined over short period of time during which it is assumed speed does not change. It may also be determined from the gradient of a distance-time graph. It is a scalar quantity, but can be compared to velocity.
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quantity which has both magnitude and direction
vector
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units of measurement that are defined in terms of other units
derived units
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an object will remain at rest, or continue to move in a straight line at a constant speed, unless a result ant force acts on it
Newton’s First Law of Motion
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a single measurement or series of measurements (of the same quantity) is described as accurate it close to correct result (mean is used if series)
accuracy
systematic error
a reading that is always either bigger or smaller than the correct value by the same amount (eg. zero offset error)
translational equilibrium
an object is in this state if there is no resultant force acting upon it, so that it remains at rest or continues to move with a constant velocity
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quantities that have only magnitude
scalar
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rate of change of displacement with time v = delta s/delta t. A vector quantity that can also be considered as speed in a specified direction. Velocity may also be determined from gradient of a displacement-time graph. If the velocity of an object changes during a period of time t, the initial velocity is given symbol u and final velocity is given the symbol v.
velocity
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a reading that is always either bigger or smaller than the correct value by the same amount (eg. zero offset error)
systematic error
accuracy
a single measurement or series of measurements (of the same quantity) is described as accurate it close to correct result (mean is used if series)
fundamental units
units of measurement that are not defined as combinations of other units
derived units
units of measurement that are defined in terms of other units
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an object is in this state if there is no resultant force acting upon it, so that it remains at rest or continues to move with a constant velocity
translational equilibrium
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measurements which may be bigger or smaller than the correct value and are scattered randomly around that value
random uncertainty (error)
random uncertainty (error)
measurements which may be bigger or smaller than the correct value and are scattered randomly around that value
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a measurement where a similar result would be obtained if the measurement was repeated (small random errors)
precision
scalar
quantities that have only magnitude
Newton’s First Law of Motion
an object will remain at rest, or continue to move in a straight line at a constant speed, unless a result ant force acts on it
Newton’s Second Law of Motion
acceleration is proportional to resultant force, F=ma o F -delta p/ delta t
