May Test Flashcards

(17 cards)

1
Q

Speed

A

Distance / time

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2
Q

Acceleration

A

(V-U) / Time

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3
Q

Velocity

A

Distance / time

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4
Q

Momentum

A

Mass x velocity

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5
Q

Force

A

Change in momentum / time

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6
Q

Newtons 3rd Law

A

If A exerts a force on B, then B exerts an equal but opposite force on A

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7
Q

Why are car safety features good

A

They increase the time it takes to change momentum

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8
Q

Frequency

A

Velocity / wavelength

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9
Q

Oscillation

A

Vibration

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10
Q

Frequency

A

1 / time

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11
Q

Diffraction

A

Spreading out of waves when they pass through a gap

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12
Q

Efficiency

A

Useful energy / total energy

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13
Q

Distance travelled

A

Speed x time

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14
Q

Resultant force

A

Mass x acceleration

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15
Q

Newtons 1st Law

A

An object will remain stopped unless an unbalanced force acts upon it

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16
Q

Weight

A

Mss x gravitational field strength

17
Q

Gradient

A

Change in vertical / change in horizontal