# Physics

0.0 / 5

HideShow resource information

- Created by: paula_perez
- Created on: 27-04-16 20:38

Name some scalar quantities

Mass, speed, energy, volume, distance, temperature

1 of 61

Name some vector quantities

Displacement, velocity, acceleration, momentum, force

2 of 61

What is a scalar quantity?

A quantity that has only magnitude

3 of 61

What is a vector quantity?

A quantity that has both a magnitude and a direction

4 of 61

What is a force?

A push or pull in a particular direction

5 of 61

In what ways can forces affect motion?

Start moving, move faster, move slower, stop moving, change direction, change shape

6 of 61

What is thrust?

This can be any driving force, it may be a push or pull, but it could be an engine which forces an object forward.

7 of 61

What is lift?

This is the force required to raise an object through a fluid

8 of 61

What is air resistance?

This is a force which acts in the air, it can slow objects down when they are moving against it. Or if harnessed could be used to move an object along.

9 of 61

What is friction?

This force acts on objects when they are in contact with a surface, such as the ground. It can be reduced by ensuring both surfaces are smooth.

10 of 61

What is gravity?

This force affects every object on Earth. It is a force which pulls everything to the centre of the earth.

11 of 61

What is upthrust?

This is an upward force which acts in water, it acts on a object against gravity, and is why certain objects float.

12 of 61

Name some contact forces

Fictional force, tension force, normal force, air resistance force, applied force, spring force

13 of 61

Name some non-contact forces

Gravitational force, electrical force, magnetic force

14 of 61

What are forces measured in?

Newtons (N)

15 of 61

What is the gravitational field strength measured in?

Newtons per kilogram (N/kg)

16 of 61

What is the calculation for weight?

Weight=mass x gravitational field strength

17 of 61

What is mass?

A measure of the amount of material an object is made of, it is measured in kilograms (kg)

18 of 61

What is weight?

The force of gravity on an object, it is measured in newtons (N)

19 of 61

How is a contact force produced?

When two objects are touching eachother

20 of 61

How is a non-contact fore produced?

For this one the objects do not have to touch eachother

21 of 61

What is work done?

Is energy transferred

22 of 61

What is the formula for work done?

Work = force x distance

23 of 61

What is work done measured in?

Joules (J)

24 of 61

How do you find the change of gravitational potential energy?

Change of gravitational potential energy (J) = mass x gravitational field strength x change of height

25 of 61

What does the turning effect of a force depend on?

The distance from the pivot

26 of 61

What is a moment?

Moment (M) = force x perpedicular distance from pivot

27 of 61

How can you increase the size of a moment?

Increase the size of the force or Increase the distance from the pivot

28 of 61

What is pressure?

The force per unit area

29 of 61

What is the formula for pressure?

Pressure = force / area

30 of 61

What unit is pressure measured in?

Pascal (Pa)

31 of 61

What factors affect pressure in a fluid?

The depth the pressure is measured at, the density of the fluid, the gravitational field strength

32 of 61

What is pressure in a fluid caused by?

The particles in the fluid

33 of 61

What is the formula for finding pressure in a fluid?

Pressure = density x gravity x height

34 of 61

What affects atmospheric pressure?

Altitude

35 of 61

What is the centre of mass?

The centre of mass of an object is that point at which its mass may be thought to be concentrated

36 of 61

What is equilibrium?

A state in which opposing forces or influences are balanced

37 of 61

What is the formula for speed?

Speed = distance / time

38 of 61

What is the formula for acceleration?

Acceleration = velocity (1) - velocity (2) / time (1) - time (2)

39 of 61

What is acceleration measured in?

metres per second squared (m/s2)

40 of 61

What is acceleration?

The rate of change in speed (or velocity), measured in m/s2. Acceleration=change of velocity/time taken

41 of 61

What is deceleration?

Slowing down or negative acceleration

42 of 61

What is displacement?

Quantity describing the distance from the start of the journey to the end in a straight line with a described direction

43 of 61

What is magnitude?

The magnitude tells us the size of the vector

44 of 61

What is momentum?

A quantity relating to a moving object that is calculated by multiplying its mass by its velocity

45 of 61

What does stationary mean?

Not moving

46 of 61

What is velocity?

The speed of an object in a particular direction

47 of 61

What is terminal velocity?

the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.

48 of 61

What factors affect your reaction time?

Intoxication, tired/illness, distraction, emotion

49 of 61

What factors affect your braking distance?

Road surface (baldness), tyre condition (friction), weather, speed, mass

50 of 61

What is the thinking distance?

the distance travelled where the driver is THINKING about stopping

51 of 61

What is the braking distance?

the distance travelled AFTER the brake has been applied.

52 of 61

If two forces act on an object along the same line, the resultant force is:

1. their sum if the forces act in the same direction. 2. their difference if the forces act in opposite directions

53 of 61

What is the limit of proportionality?

The limit for Hooke's law applied to the extension of a stretched spring

54 of 61

What is Hooke's Law written as an equation?

Force applied (N) = spring constant (N/m) x extension (m)

55 of 61

What is the spring constant?

The spring constant is different for different objects and materials. It is found by carrying out an experiment. For example, the unloaded length of a spring is measured. Different numbers of slotted masses are added to the spring and its new length

56 of 61

What is the formula for momentum?

Momentum (kg m/s) = mass x velocity (m/s)

57 of 61

Is momentum conserved?

Yes

58 of 61

What is elastic deformation?

A change in shape of a material at low stress that is recoverable after the stress is removed.

59 of 61

What is a linear relation?

A relation between two variables which creates a straight line when graphed

60 of 61

What is different about non-linear relations?

They do not have a constant slope

61 of 61

## Other cards in this set

### Card 2

#### Front

Name some vector quantities

#### Back

Displacement, velocity, acceleration, momentum, force

### Card 3

#### Front

What is a scalar quantity?

#### Back

### Card 4

#### Front

What is a vector quantity?

#### Back

### Card 5

#### Front

What is a force?

#### Back

## Similar Physics resources:

1.0 / 5

1.0 / 5

0.0 / 5

1.0 / 5

1.0 / 5

0.0 / 5

1.5 / 5

1.0 / 5

0.0 / 5

## Comments

No comments have yet been made