A.1 Kinematics Flashcards

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1
Q

Magnitude

A

Size

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2
Q

Scalar quantity

A

Only have a magnitude

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3
Q

Vector quantity

A

Measured with a magnitude and direction

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4
Q

Distance

A

How far you have travelled (m)

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5
Q

Displacement

A

The distance travelled in a particular direction (ie start to finish point) metres (m)

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6
Q

Speed

A

Rate of change of distance (ms-1)

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7
Q

Velocity

A

Rate of change of position (displacement divided by time) (ms-1)

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8
Q

Acceleration

A

Rate of change of velocity (change in velocity/time) (ms-2) 9.8ms-2 down on earth

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9
Q

Negative acceleration

A

The direction of the net force is in a negative direction

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10
Q

Acceleration of free fall on earth

A

9.8ms-2

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11
Q

Displacement symbol and unit

A

s, m

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12
Q

Initial velocity symbol and unit

A

u, ms-1

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13
Q

Projectile

A

An object moving through the air under only the influence of gravity

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14
Q

Vertical component of a projectile

A

Is constantly changing due to the downwards force of gravity

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15
Q

Horizontal component of a projectile

A

Is constant as no forces act horizontally

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16
Q

Distance-time graphs

A

Gradient = speed

17
Q

Displacement-time graphs

A

Gradient = velocity

18
Q

Speed time graphs

A

Gradient=acceleration

19
Q

Velocity time graphs

A

Gradient = acceleration
Area below line = displacement

20
Q

Acceleration time graphs

A

Area below line = change in velocity