Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

GCSE:Physics- CGP Revision Guide -END > P5 - Forces > Flashcards

P5 - Forces Flashcards

You may prefer our related Brainscape-certified flashcards:
GCSE Geography - AQA flashcards Physics 101 flashcards GCSE Religious Studies - Edexcel Route B flashcards GCSE Religious Studies - Eduqas Route A flashcards GCSE Religious Studies - Edexcel Route A flashcards GCSE Religious Studies - Eduqas Route B flashcards AP® Physics flashcards
1
Q

What do you vector quantities have

A

They had a magnitude and direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are some examples of vector quantities

A

Force, velocity, displacement, acceleration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What do you scaler quantities have

A

I only have a magnitude and no direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are some examples of scaler quantities

A

Speed, distance, mass, time, temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the meaning of a contact force

A

Went to objects have to be touching for a force to act

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are some examples of a contact forces

A

Air resistance, tension in ropes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What’s the meaning of a non-contact force

A

If the two objects do not need to be touched for the force to act

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are some examples of noncontact forces

A

Magnetic force, gravitational force, electrostatic forces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the meaning of an interaction pair

A

Is a pair of forces that are equal and opposite and act on 2 interacting objects

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is gravitational forces

A

Gravity attracts all messes but you only noticed it when one of the message is really really big

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What’s the effect of gravity

A

On the surface of the planet it makes all things fall towards the ground

It gives everything a weight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is mass

A

It’s just the amount of “stuff “in an object. For any given object this will have the same value everywhere in the universe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is weight

A

Is the force acting on an object due to gravity close to earth this force is caused by the gravitational field around the Earth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Where is the gravitational field strength strongest

A

Gravitational field strength varies with location. It’s stronger the closer you are to the mass causing the field and stronger for larger masses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What does weight depend on

A

It depends on the strength of the gravitational field at the location of the object. This means the weight of an object changes with its location

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How do you measure weight

A

Using a newtonmetre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How is mass measured

A

Mass is not a force

Using a scale

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is a free body diagram

A

A diagram that shows all the forces acting on an object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the resistance Force

A

In real situations there are at least two forces acting on an object along any direction

If you have a number of forces acting at a single point you can replace them with a single force

The single force is called the resistant force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

How do you workout resistant force

A

Considered the horizontal and vertical direction separately

Subtract The horizontal size

Subtract the vertical size

State the size and direction of the resistant force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

How is a resistant force moving an object doing work on it

A

To make something move a force must be applied

The thing applying the force needs a source of energy

The force does “work “to move the object and energy is transferred from one store to another

With the energy is transferred “usefully “or is “wasted”you can still say that “work is done “

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is special about mass and weight

A

They are directly proportional

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

How do you use a scale drawing to find resistant force

A

Start by flooring a scale drawing of the forces acting

Make sure you choose a sensible scale

For the resistance from the tale of the first arrow to the tip of the last Arrow (draw the hypotenuse)

Measured the hypotenuse and use the scale to find the force in newtons

Use a protractor to measure the direction as a bearing

24
Q

What is equilibrium

A

If all of the forces acting on an object combined to give a resistant force of zero the object is in equilibrium

25
Q

How do you draw a scale diagram of an object in equilibrium

A

On a scale drawing this means that the tip of the last force you drew food and where the tip of the first force you to began

You might be given forces acting on an object and told to find a missing force given that the object is an equilibrium. To do this Draw out the forces you to know, join the end of the last force to the Start of the first force. This line is the missing Force so you can measure its size and direction

26
Q

How do you work out the force acting on something at an awkward angle

A

Split it into two components-vertical and horizontal component

Draw them using a sensible scale

Work out the hypotenuse using the scale factor

27
Q

How does stretching, compressing and bending transfer energy

A

When you apply a force to an object you may cause it to stretch ,compress or bend

To do this you need more than one force acting on the object

An object has been elastically deformed if it can go back to its original shape and length after the force has been removed

Objects that can be electrically deformed are called elastic objects

An object has been inelastically deformed it doesn’t return to its original shape and length after the force has been removed

Work is done when a force stretches or compresses an object and causes energy to be transferred to the elastic potential energy store of the object

All of the energy is transferred to the elastic potential energy store if it is elastically deformed

28
Q

What is the relationship between extension and force

A

Extension of a spring is directly proportional to the load or force applied

29
Q

How do you use F = KE to work at compression

A

Where he is just the difference between the neutral and compressed length-the compression

30
Q

What happens to an elastic object when there is too much force

A

There is a limit to the amount of force you can apply to an object for the extension to keep on increasing Proportionally

The object will not return to its original shape and length

31
Q

What’s the difference between speed and velocity

A

Speed and velocity both mega how fast you’re going what speed is a scaler and velocity is a vector

This means you can have objects travelling at a constant speed with a change in velocity. This happens when the object is changing direction whilst playing at the same speed.

If you want to measure the speed of an object that’s moving with a constant speed you should time how long it takes to object to travel a certain distance

Objects rarely travel at a constant speed

32
Q

What’s the meaning of speed

A

Speed is just how fast you’re going with no regards to the direction

33
Q

What’s the meaning of velocity

A

Velocity is speed in a given direction

34
Q

What’s the typical speed of

A person walking

A person running

A person cycling

A train

A car

A plane

A

1.5 m/s

3 m/s

6 m/s

30 m/s

25 m/s

250 m/s

35
Q

What’s the speed of sound in air

A

330 m/s

36
Q

What does the speed of sound changing depend on

A

It depends on what the sound waves are travelling through and the speed of wind is affected by many factors

Windspeed can be affected by things like temperature, atmospheric pressure and if there are any large buildings or structures nearby

37
Q

What’s the meaning of acceleration

A

Is how quickly your speeding up

acceleration is the change in velocity in a certain amount of time

Deceleration is just negative acceleration

38
Q

How do you estimate acceleration

A

To do this you need the typical speed of the object

39
Q

What is uniform acceleration

A

Constant acceleration is sometimes called uniform acceleration

acceleration due to gravity is uniform for objects in freefall. It’s roughly equal to 9.8 m/s

40
Q

What does distance time graph’s show us

A

Gradient = speed (The steeper the graph the faster it’s going) = Y axis divided by X axis

Flat sections are where it’s stationary-it’s stopped

Straight uphill sections mean it’s travelling at a steady speed

Curves represent Acceleration or deceleration

A steeper curve means it’s speeding up

A levelling off curve means it’s slowing down

If the object is changing speed you can find its speed at a point by finding the gradient of the tangent to the curve at that point

41
Q

What does a velocity time graph shows

A

Gradient - acceleration

Flat sections represent travelling at a steady speed

The steeper the graph the greater the acceleration or deceleration

Uphill sections are acceleration

Downhill sections or deceleration is

The area underneath any section of the graph is equal to the distance travelled in that time interval

42
Q

What does fiction do

A

If any object has no force propelling it along it will always slow down and stop because of fiction

Fiction always acts in the opposite direction to the mental

To travel at a steady speed the driving forces needs to balance the frictional forces

You get friction between two surfaces in contact or when the object passes through a fluid

You can reduce friction between services by using a lubricant

43
Q

How does drag increasing also increase speed

A

Drag is the resistance you get in fluid. Air resistance is a type of drag

An important factor by far in reducing drug is keeping the shape of the object streamlined

This is where the object is designed to allow fluid to flow easily across it reducing drag.

Frictional forces from fluids always increases with speed

44
Q

What is terminal velocity

A

When a falling object 1st sets off the force of gravity is much more than the frictional force slowing it down so it accelerates

As the speed increases the friction builds up

This gradually reduces the acceleration until eventually the frictional force is equal to the acceleration force so the resultant force is zero

It will have reached the maximum speed or terminal velocity and will fall at a steady speed

45
Q

What does terminal velocity depend on

A

Typically the Less streamline an object is the lower its terminal velocity

So objects with large surface area tend to have low terminal velocity

Shape

46
Q

What is Newton’s first law

A

If the resultant force on a stationary object is zero the object will remain stationary. If the resultant force on a moving object is zero it’ll just carry on moving in the same velocity (same speed and direction)

47
Q

What’s the relationship between acceleration, resistant force and mass

A

The launch of the resisting force acting on an object the more the object accelerates-the force and the acceleration Is directly proportional

Exhilaration is also inversely proportional to the mass of the object-so an object with a larger mass will accelerate less than one with a smaller mass

48
Q

What is Inertia

A

Until acted upon by A resultant force object at rest day stay at rest and objects moveing at a steady speed will stay moving at that speed. This tendency to continue in the same state of motion is called inertia

And objects inertia mass measures how difficult it is to change the velocity of an object

49
Q

What is Newton’s third law

A

When two objects interact the forces they exert on each other are equal and opposite

50
Q

What is stopping distance

A

The distance it takes to stop a car in an emergency

51
Q

What is the thinking distance

A

Thinking distance is how far the car travels during the drivers reaction time (the time between the drivers seeing a hazard and applying the brakes)

52
Q

What is the braking distance

A

Braking distance is the distance taken to stop under the braking force (once the brakes are applied)

53
Q

What is the thinking distance affected by

A

If you’ve had alcohol or drugs

Age

54
Q

What is braking distance affected by

A

Your speed-for a given braking force the faster vehicle travels the longer it takes to stop

The weather or road surface-if it is wet or icy or there are leaves or are you on the road there is less grip between the vehicles tires and the road which can cause tires to skid

Conditions of your tires-if the tires of a vehicle haven’t got any presents left then they cannot get rid of water in wet conditions. This leads to them skidding on top of water

How good your brakes are-if brakes are worn or faulty they won’t be able to apply as much force as well maintained breaks which can be dangerous when you need to break hard

55
Q

How does breaking occur

A

When the brake pedal is pressed this causes brake pads to be pressed onto the wheel. This contact causes friction which causes work to be done.Transfers energy from the kinetic energy store of the wheel to the thermal energy store of the breaks. The break increases in temperature

The faster a vehicle is going the more kinetic energy it has and so more work needs to be done to stop at. This means that a greater braking force is needed to make it stop within a certain distance

A large braking force means a larger deceleration. Very large deceleration can be dangerous because they may cause breaks to overheat or could cause the vehicle to skin

56
Q

What is momentum

A

The greater the mass of an object or the greater its velocity the more momentum the object has

Momentum is a Vector quantity

57
Q

What is the conservation of momentum

A

In a closed system the total momentum before an event is the same as after the event

If the momentum before and event is zero then the momentum after will also be zero

GCSE:Physics- CGP Revision Guide -END (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions