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SCIENCE GCSE > Physics CT1 > Flashcards

Physics CT1 Flashcards

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1
Q

What does scalar mean?

A

Quantities that have magnitude only

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2
Q

What does vector mean?

A

Quantities that have magnitude and a direction

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3
Q

What does speed mean?

A

How fast an object is travelling

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4
Q

What does velocity mean?

A

Speed with a direction

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5
Q

What does acceleration?

A

The rate of change of velocity

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6
Q

What does displacement mean?

A

Shortest point between two points

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7
Q

What does mass mean?

A

How much of something there is

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8
Q

What does weight mean?

A

The force of gravity with mass

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9
Q

What is mass measured in?

A

Kg

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10
Q

What is weight measured in?

A

Newtons

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11
Q

How to calculate weight?

A

Mass times Gravity

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12
Q

What does instantaneous speed mean?

A

the speed at a particular point in a journey

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13
Q

What does average speed mean?

A

total distance divided by the total time taken

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14
Q

How to calculate speed?

A

distance divided by time

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15
Q

What does a horizontal line mean on a distance time graph?

A

stationary/ not moving

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16
Q

What does a consistent gradient mean on a distance time graph?

A

consistent speed

17
Q

What does a steeper line mean on a distance time graph?

A

The faster it is moving

18
Q

What does a downward line mean on a distance time graph?

A

Going/moving backwards

19
Q

What does acceleration mean?

A

Is a change in velocity per second

DIRECTION MATTERS

20
Q

How do calculate acceleration?

A

final velocity minus initial velocity divided by time taken

21
Q

Why does acceleration happen?

A

Due to gravity

22
Q

What is the gravitational field strength?

A

9.8 or 10

23
Q

What happens when an object has a negative acceleration number?

A

It is losing speed

24
Q

What is the long formula for acceleration when the distance is unknown?

A

v2-u2=2xaxX

25
Q

Define momentum

A

A combination of mass and gravity

26
Q

Define acceleration

A

Change in speed or velocity of an object over a certain time

27
Q

Define force

A

an influence that can cause an object to change its velocity

28
Q

Define energy

A

The capacity for doing work

29
Q

Define distance

A

The total length of the path covered by an object it is scalar

30
Q

Define displaysment

A

The shortest distance between the initial and final position of an object it is vector

31
Q

Difference between velocity and speed

A

Velocity is a vector that measures both magnitude and direction while speed is scalar that measures only magnitude

32
Q

Typical speed for walking

A

1.5 m/s

33
Q

Typical speed for running

A

12 km/h

34
Q

Typical speed for cycling

A

6 m/s

35
Q

Typical speed of car

A

30 mph

36
Q

How to work out the gradient of a distance time graph

A

vertical difference between two points on a graph divided by the horizontal difference between the same two points

SCIENCE GCSE (5 decks)

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