Physics Y9 Flashcards by James C-M

Q

Vector

A

Displacement

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Q

Distance

A

Scalar

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Q

Mass

A

Scalar

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Q

Force

A

Vector

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Q

Momentum

A

Vector

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Q

Power

A

Scalar

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Q

Time

A

Scalar

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Q

Energy

A

Scalar

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Q

Temperature

A

Scalar

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Q

Velocity

A

Vector

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Q

Work

A

Scalar

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Q

Frequency

A

Scalar

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Q

Acceleration

A

Vector

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Q

Speed

A

Scalar

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Q

Speed =

A

Distance / Time

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Q

Distance =

A

Speed x Time

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Q

Velocity =

A

Displacement / Time

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Q

Time =

A

Whole distance / Speed

Q

Acceleration =

A

Change in Velocity / Time taken for change

Q

Change in velocity =

A

Final velocity - initial velocity

Q

What is a angled line up on a distance time graph

A

A constant speed

Q

Calculating speed on a slant

A

Distance traveled/time taken / 2

Q

What is a flat line on a distance time graph

A

Being stationary

Q

What is a slant on velocity time graph

A

Constant acceleration

Q

What is a flat line on a velocity time graph

A

Constant velocity

Q

How to calculate distance on a slant on a velocity time graph

A

Base x height x 1/2 of measured area

Q

Does velocity go into the negatives (eg. -34m/s2)

A

Yes, on a downwards slant

Q

A

Q

Stopping distance =

A

Thinking distance + braking distance

Q

20mph =

A

12m of stopping distance

Q

30mph=

A

23 m of stopping distance

Q

40mph =

A

36 m of stopping distance

Q

50mph =

A

53 m of stopping distance

Q

60mph =

A

73 m of stopping distance

Q

70mph =

A

96 m of stopping distance

Q

How many energy stores are there

A

9

Q

How is energy transfered

A

Forces, heating, light, sound or electric current

Q

Kinetic energy store =

A

1/2 x Mass x Velocity squared

Q

GPE =

A

Mass x Gravitational field strength x change in height

Q

What’s earths gravity

A

Roughly 10N/Kg or 9.8 if your being picky

Q

Name the 3 ways of heat transfer

A

Conduction, Convection and Radiation

Q

Efficiency =

A

(Useful energy out / Total energy in) x 100

Q

Acceleration =

A

(Final velocity - initial velocity) /Time taken