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Physics GCSE > Forces And Motion (10) > Flashcards

Forces And Motion (10) Flashcards

1
Q

In a distance-time graph, what does the gradient =

A

Gradient = speed

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2
Q

In a velocity-time graph, what does the gradient =

A

Gradient = acceleration

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3
Q

In a distance-time graph, flat sections represent …

A

Where there is no movement, the object has stopped moving

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4
Q

In a velocity-time graph, flat sections represent …

A

Steady speed

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5
Q

In a ____________-time graph, the steeper the graph, the greater the acceleration or decceleration

A

Velocity-time

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6
Q

In a distance-time graph, what do downhill sections mean

A

That it’s going back in the opposite direction

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7
Q

In a velocity-time graph, uphill sections (/) represent ________________

A

Acceleration

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8
Q

In a velocity-time graph, downhill sections () represent ________________

A

Deceleration

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9
Q

In which graph does the area underneath represent distance

A

In velocity-time graph

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10
Q

What does a curve represent on a velocity-time graph

A

Changing acceleration

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11
Q

How is slowing down represented on a distance-time graph

A

A levelling of curve

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12
Q

What can you calculate from a distance-time graph (1)

A

Speed

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13
Q

What can you calculate from a velocity-time graph (3)

A

Acceleration
Speed
Distance

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14
Q

How do you calculate the speed from a distance-time graph

A

Speed = gradient = vertical/horizontal

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15
Q

How do you calculate acceleration from a velocity time graph

A

Acceleration = gradient = vertical/horizontal

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16
Q

How do you calculate the speed from a velocity time graph

A

The speed is simply found by reading the value off the velocity axes

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17
Q

How do you find the distance travelled from a velocity time graph

A

The distance travelled is found from the the area underneath the graph

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18
Q

What does gravity give every object

A

A weight

19
Q

What is mass

A

The amount of ‘stuff’ in an object

20
Q

An object’s _________ will be the same anywhere in the universe

A

Mass

21
Q

An object has the same ___________ whether is it is on the earth or the moon but its ___________ will be different

A

Same mass

Different weight

22
Q

Weight is a __________

A

Force

23
Q

Weight is measured in __________

A

Newtons

24
Q

Weight is measured using a _____________ ___________

A

Newton meter

25
Q

Mass is measured in _______________

A

Kilograms

26
Q

On earth, the strength of gravity is _________

A

10 N/Kg

27
Q

On the moon, the strength of gravity is _________

A

1.6 N/Kg

28
Q

Name 3 different types of force

A 
Gravity/weight
Reaction force
Electrostatic force
Lift
Tension
Thrust
Drag
29
Q

When an object moves in a fluid (air/water), it feels _________ in the opposite direction to its motion

A

Drag

30
Q

2 ways in which friction occurs

A

Between solid which are sliding past each other
Resistance or drag from fluids
Between solid surfaces which are gripping (table)

31
Q

In a fluid, what happens to friction as the speed increases

A

The friction also increases

32
Q

How can you reduce friction between 2 solids

A

Lubricant such as oil or grease between the surfaces

33
Q

Due to a build up of resistance, the rate of acceleration slows down however the object is still _______________

A

Accelerating (getting faster)

34
Q

Eventually once an object can’t accelerate any more it has reached its _____________ _____________

A

Terminal velocity

35
Q

The accelerating force acting on all falling objects is ___________ and it would make them all accelerate at the same rate if it wasn’t for _______ _______________

A

Gravity

Air resistance

36
Q

If an object such as a car is moving at a constant velocity, what do we know about the resultant force

A

It is zero (all the forces are balanced)

37
Q

What does an unbalanced force produce

A

Acceleration or decceleration

38
Q

The bigger the force, the ____________ the acceleration or deceleration

A

Greater

39
Q

The bigger the mass, the _____________ the acceleration or deceleration

A

Smaller

40
Q

To get a big mass to accelerate as fast as a small mass it needs a bigger __________

A

Force

41
Q

A resultant force produces acceleration and the formula for this is

A

F = ma

42
Q

In the formula F = ma, F must always be the _____________ _________

A

Resultant force

43
Q

If object A exerts a force on object B then object B exerts the exact ____________ on object A

A

Opposite

Physics GCSE (22 decks)

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