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Physics > P9 - Motion > Flashcards

P9 - Motion Flashcards

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1
Q

What does S stand for in SUVAT?

A

Distance

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2
Q

What does U stand for in SUVAT?

A

Initial Velocity

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3
Q

What does V stand for in SUVAT?

A

Final Velocity

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4
Q

What does A stand for in SUVAT?

A

Acceleration

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5
Q

What does T stand for in SUVAT?

A

Time

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6
Q

Which equation do you use to calculate the speed of an object?

A

v = s/t

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7
Q

Which equation links Final Velocity, Initial Velocity, Acceleration and Distance?

A

v² - u² = 2as

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8
Q

Which equation links Acceleration, Initial Velocity, Final Velocity and Time?

A

a = v-u / t

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9
Q

What units is Distance in?

A

m (metres)

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10
Q

What units is Velocity in?

A

m/s (Metres per second)

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11
Q

What units is Acceleration in?

A

m/s² (metres per second squared)

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12
Q

What units is Time in?

A

s (seconds)

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13
Q

What does the gradient of a line on a distance time graph represent?

A

The speed

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14
Q

What does it mean when the line is horizontal on a distance time graph?

A

the object is stationary

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15
Q

What does it mean when the line is sloping upwards on a distance time graph?

A

the object is moving at a constant velocity

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16
Q

What is displacement?

A

Displacement is distance in a given direction

17
Q

What is velocity?

A

Velocity is speed in a given direction

18
Q

What is acceleration?

A

The rate at which an object increases in velocity

19
Q

Describe the velocity of an object travelling around in a circle at a constant speed.

A

Although it may be travelling at a constant speed its velocity will not be constant as the direction in which it is moving is constantly changing.

20
Q

What is deceleration?

A

The rate at which an object decreases in velocity

21
Q

What is the equation that links Force, Mass and Acceleration?

A

F = M x A

22
Q

What is the equation to find weight?

A

W = M x G (Weight = Mass x gravitational Field Strength)

23
Q

What is Force Measured in?

A

Newtons (N)

24
Q

What is Mass measured in?

A

Kilograms (KG)

25
Q

What is Weight Measured in?

A

Newtons (N)

26
Q

What is weight?

A

Weight is the downward force exerted by an object due to its mass and the gravitational pull of a planet

27
Q

What is mass?

A

Mass is the amount of matter in a substance. It is measured in kilograms

28
Q

What does the gradient of a line on a velocity time graph represent?

A

Acceleration

29
Q

What does it mean when the line is horizontal on a velocity time graph?

A

It is travelling at a constant speed

30
Q

What does it mean when the gradient is negative on a velocity time graph?

A

The object is decelerating

31
Q

What does the area under the line on a velocity time graph represent?

A

The displacement of the object

32
Q

How do you find the speed of an object

travelling at increasing speed at a certain moment on a distance time graph?

A

You draw a tangent to the point at the moment you want to calculate the speed. You then calculate the gradient of the tangent.

Physics (9 decks)

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