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Physics > Forces > Flashcards

Forces Flashcards

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1
Q

How much does each kilogram have a gravitational Pull of

A

9.8N

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2
Q

What is the Earth’s gravitational field strength

A

9.8N/KG

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3
Q

What does gravitational field strength mean

A

Gravity exerted around an object

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4
Q

What does centre of mass mean

A

The weight and object acts through a single point

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5
Q

What unit is weight measured in

A

Newtons

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6
Q

Definition of weight

A

Force acting upon an object due to gravity

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7
Q

Definition of mass

A

How much matter

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8
Q

What unit is mass measured in

A

kg

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9
Q

What is scalar

A

A quantity that only has magnitude(size)

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10
Q

example of scalar

A

mass
time
speed
temp

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11
Q

What is vector

A

A quantity that only has magnitude and direction

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12
Q

Example of vector

A

Force
velocity
momentum

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13
Q

For a vector what does the length of the arrow mean

A

Magnitude of vector

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14
Q

For a vector what does that direction of the arrow mean

A

Direction of vector

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15
Q

Velocity

A

Speed

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16
Q

Distance

A

How far

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17
Q

Displacement

A

Distance plus direction

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18
Q

What is area measured in

A

Metres squared

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19
Q

What is mass measured in

A

kg

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20
Q

What is weight measured in

A

newtons

21
Q

What is gravitational field strength is measured in

A

n/kg

22
Q

What is force measured in

A

N

23
Q

What is work done measured in

A

J

24
Q

What is the distance measured in

A

Metres

25
Q

What is the moment measured in

A

Nm (newton metres)

26
Q

The pressure on divers depends on the ….

A

Weight of the water above

27
Q

What is upthrust

A

Resultant force exerted by fluid

28
Q

A fluid flows and changes shape to …..

A

Fill a container

29
Q

What is atmospheric pressure caused by

A

billions of particles colliding with the surface

30
Q

What does a hydraulic machine use liquids to do

A

Transmit pressure

31
Q

What is force

A

Push Pull

32
Q

Example of force

A

Stretch squash turn

33
Q

What is the contact force

A

Exerted between two objects when they touch

34
Q

Example of the contact force

A

Fiction, air resistance and tension

35
Q

What is a noncontact force

A

Exerted between two objects without touching

36
Q

Example of an noncontact force

A

Gravity

MagneticForces

37
Q

What is the resultant force

A

Overall effect of all the forces acting upon object

38
Q

Two forces acting the same direction are

A

added

39
Q

Two forces acting in the opposite direction are

A

taken away

40
Q

What are you resolving forces

A

An object pulled with the force on an angle

41
Q

What is a free body diagram

A

Shows magnitude and direction of all forces upon an object

42
Q

Work done against frictional forces temperature objects

A

Rises

43
Q

if force is at right angles direction of movement….

A

NO work done is done

44
Q

What happens to energy when work is done

A

Energy is transferred

45
Q

What happens to the object when there is only one force

A

The Object changes speed or direction

46
Q

What happens an object is more than one force is applied

A

The object changes shape

47
Q

Two balanced forces can

A

Stretch an object

compress an object

48
Q

three balanced forces can

A

Send an objectSend an object

Physics (7 decks)

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