Brainscape's Knowledge GenomeTM

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


See full index

Physics GCSE > Forces And Motion > Flashcards

Forces And Motion 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

Define scalar

A

Scalar quantities only have a magnitude NO DIRECTION

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

Define vector

A

Vector quantities have BOTH a magnitude and direction

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

Give an example of a vector quantity

A

Velocity

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

Give an example of a a scalar quantity

A

Speed

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

What does the area under a velocity / time graph represent

A

The distance travelled by the object

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

What does a HORIZONTAL LINE show on a distance time graph

A

No movement

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

What does a HORIZONTAL LINE show on a velocity time graph

A

Constant speed

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

What is the equation for acceleration

A

Change in velocity ÷ time taken

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

How would you work out the FINAL SPEED of an object

A

Final speed = initial speed + (acceleration x time)

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

What is displacement

A

Displacement is the distance an object moves in a straight line from a starting point to a finishing point
Displacement is a vector quantity

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

What is distance

A

Distance is how far an object moves.
Distance is a scalar quantity.

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

What is the resultant force

A

The resultant force is the sum of all of the forces acting on an object.

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

State the resultant force equation

A

Resultant force (F) = mass (m) x acceleration (a)
(Newton’s 2nd Law)

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

What is Newton’s 1st law

A

Newton’s 1st Law says that the velocity of an object will only change if a resultant force is acting on the object

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

What does Newton’s 3rd law say

A

Whenever 2 objects interact, the forces that they exert on (apply to) each other are EQUAL AND OPPOSITE

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

What is the equation for change in momentum

A

Change in momentum = force x time

17
Q

What is the law of conservation of momentum

A

Momentum cannot be created or destroyed.
So, if two objects collide, the sum of momentum before collision = sum of momentum after collision.

18
Q

What is the formula for momentum

A

Mass x velocity

19
Q

How do safety features in a car reduce the force felt by a person in a crash

A

When a crash takes place, there is a certain change in momentum.
The force felt by the person is the change in momentum divided by the time taken.
Safety features of a car increase the time taken for the momentum to change.
Therefore reducing the force felt by the person in the crash.

20
Q

What is inertia

A

A measure of how difficult it is to change the object’s motion.

21
Q

What is the equation for weight

A

Weight = mass x gravitational field strength

22
Q

What is the average value for acceleration on Earth due to gravity?

A

10m/s^2

23
Q

What is the definition of weight

A

The force acting downwards on an object due to gravity

24
Q

For an object in circular motion, what is the name of the resultant force, acting towards the centre of the circle?

A

Centripetal force

25
Q

What is the equation for stopping distance

A

Stopping distance = thinking distance + braking distance.

26
Q

Name 3 factors that affect the breaking distance

A

Initial car speed
Road conditions
Condition of brakes

27
Q

Name 3 factors that affect the thinking distance

A

Tiredness
Distractions
Drugs or alcohol

28
Q

What could up you use to measure the speed of objects

A

Light gates
Stopwatch

29
Q

What is Newton’s 2nd law

A

Force = mass x acceleration

30
Q

Does an object in orbit have a changing speed or velocity

A

Constant speed
velocity is changing

31
Q

Momentum =

A

Mass x velocity

32
Q

Name 3 factors that affect the stopping distance

A

Mass of the vehicle
speed of the vehicle
drivers reaction time
state of the vehicles breaks
state of the road
amount of friction

33
Q

Why does a person exert a different pressure on the ground when standing rather than when lying

A

Area of contact between person and bed is smaller when standing up
Same weight over smaller area so the pressure is greater when standing up

Physics GCSE (17 decks)

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