Kinematics 1 and 2 Flashcards

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1
Q

Scalar

A

A physical quantity which has magnitude/size only

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2
Q

Vector

A

A physical quantity which has both magnitude/size and direction

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3
Q

Distance

A

Distance is the length of path travelled

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4
Q

Displacement

A

Displacement is the change in position of a body

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5
Q

Speed

A

Speed is the rate of change of distance

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6
Q

Velocity

A

Velocity is the rate of change of displacement

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7
Q

Instantaneous Velocity

A

The velocity at a particular instant in time, measured over a small time interval.

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8
Q

Acceleration

A

The rate of change of velocity

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9
Q

Gravitational Force

A

The earth exerts a gravitational force on all objects that have mass and it is directed towards the centre of the earth

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10
Q

Free Fall

A

An object is in a state of free fall when the only force acting on it is the gravitational force

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11
Q

Terminal Velocity

A

This is reached when the magnitudes of the frictional force and gravitational force are equal

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12
Q

Resultant vector

A

A single vector that has the same effect as the original vectors acting together

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