Brainscape's Knowledge GenomeTM

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


See full index

AQA A level PE Year 1+2 > Linear motion > Flashcards

Linear motion Flashcards

1
Q

Define scalar quantity

A

When measurements only determined in terms of magnitude

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

Define vector quantity

A

When measurements described in magnitude and direction

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

What are the scalar measuremnts?

A

Mass, distance, speed

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

What are the vector measurements?

A

Weight, acceleration, displacement, velocity, momentum

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

Define mass

A

The quantity of matter the body possesses

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

Define weight

A

The force on a given mass due to gravity

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

Define distance

A

The path a body takes as it moves from start to finish position

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

Define displacement

A

Shortest route in a straight line between start and finish position

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

Define speed

A

The rate of change of distance

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

Define velocity

A

The rate of change of displacement

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

Equation for speed

A

Speed (M/S) = Distance (M) / Time taken(s)

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

Equation for velocity

A

Velocity (M/S) = Displacement (M) / Time taken (S)

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

Define acceleration

A

The rate of change of velocity

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

Equation for acceleration

A

Acceleration (m/s^2) = (Final velocity-initial velocity)/ Time (s)

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

Define momentum

A

The product of mass and velocity of an object in kgm/s

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

What are the 2 types of force

A

Internal
External

17
Q

Define external force

A

Comes from outside the body

18
Q

Define internal force

A

Generated by skeletal muscles

19
Q

What are the vertical forces?

A

Weight
Reaction force

20
Q

What are Newtons 3 laws of motion

A

1)Law of inertia
2)Law of acceleration
3)Law of Reaction

21
Q

What is the law of inertia?

A

An object will remain stationary or in constant motion in a straight line unless another force is exerted on it

22
Q

What is the law of acceleration?

A

Acceleration of an object is directly proportional to the force exerted on it and inversely proportional to its mass

23
Q

What is the law of reaction?

A

When 2 objects interact, they exert equal and opposite forces on each other

24
Q

Define reaction force

A

Occurs when 2 bodies are in contact with each other

25
Q

What are the horizontal forces?

A

Friction
Air resistance

26
Q

Define friction

A

Force that occurs when 2 or more bodies are in contact with one another

27
Q

What are the 2 types of friction force?

A

Static
Sliding

28
Q

What is static friction?

A

Force exerted on one surface by another when there is no motion between the surfaces

29
Q

What is sliding friction

A

Where 2 bodies in contact have a tendancy to slide over one another

30
Q

When drawing arrows on a diagram, which was does the friction arrow go when static friction occurs?

A

In the direction of motion

31
Q

When drawing arrows on a diagram, which was does the friction arrow go when sliding friction occurs?

A

Against the direction of motion

32
Q

What factors affect friction?

A

Surface characteristics
temp of surface - More temp means less friction
Mass of object - more mass means more friction

33
Q

Define air resistance

A

Force that opposes the motion of body travelling through air

34
Q

What factors affect air resistance

A

Velocity - greater velocity greater resistance

Cross sectional area - larger area means large resistance

Shape and surface characteristics - smoother and more streamlined reduces resistance

35
Q

Define impulse

A

Time taken to apply force to an object

36
Q

Impulse equation

A

Impulse (N s)= Force (N) X Time(s)

N s = newton seconds

NOT PER SECOND

37
Q

How can impulse be used to decrease the momentum of an athlete when running?

A

Increase the contact time between the foot and ground to increase time force is exerted to slow the performer

38
Q

How can impulse be used to increase momentum of an athlete during a hammer throw?

A

Performer may add 2 or 3 extra swings to prolong the time the athlete is adding force to his swing

AQA A level PE Year 1+2 (81 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions