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Physics > Higher, Faster, Stronger > Flashcards

Higher, Faster, Stronger Flashcards

1
Q

Scalar

A

Has only a magnitude

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2
Q

Vector

A

Has a magnitude and a direction

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3
Q

Uniform Acceleration

A

Acceleration is constant throughout, we can use SUVAT to work out

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4
Q

SUVAT (no S)

A

v=u+at

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5
Q

SUVAT (no U)

A

s=vt-1/2at^2

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6
Q

SUVAT (no V)

A

s=ut+1/2at^2

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7
Q

SUVAT (no A)

A

s=(u+v)/2*t

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8
Q

SUVAT (no T)

A

v^2=u^2+2as

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9
Q

Newton’s First Law

A

Every body continues in a state or rest or uniform motion (constant velocity) unless a resultant force acts on it

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10
Q

Newton’s Second Law

A

F=ma

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11
Q

Newton’s Third Law

A

If object A exerts a force on object B then object B will exert and equal and opposite force on object A (every action has an equal and opposite reaction)

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12
Q

Displacement Time Graphs

A

Gradient is velocity

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13
Q

Force Pairs

A
  • forces acting on the same object
  • equal in size (same magnitude)
  • act in the same line of action
  • opposite in direction
  • of the same type (e.g. both electrostatic or gravitational)
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14
Q

Equilibrium

A

the net force equals zero

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15
Q

Elastic

A

Stretch when put under tension and return to original shape/size when load removed

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16
Q

Strong

A

Require a large tension to break them

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17
Q

Hooke’s Law on a graph

A
  • must pass through the origin

- are linear with a constant gradient

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18
Q

Hooke’s Law

A

Force is proportional to extension so there must be a constant ‘k’ which is stiffness

19
Q

Limit of proportionality

A

Where the graph showing Hooke’s Law starts to significantly deviate

20
Q

Kinetic Energy

A

energy an object has because of movement

21
Q

Potential Energy

A

energy a body has due to its position or arrangement (height - gravitational)

22
Q

Elastic energy from a graph

A

area under a force extension graph

23
Q

When is using SUVAT suitable?

A

only when the acceleration is constant

24
Q

What are the base units?

A
  • Length [m]
  • Mass [kg]
  • Time [s]
  • Current [A]
  • Temperature [K]
  • Amount [mol]
25
Q

Giga

A

G x10^9

26
Q

Mega

A

M x10^6

27
Q

Kilo

A

k x10^3

28
Q

Milli

A

m x10^-3

29
Q

Micro

A

μ x10^-6

30
Q

Nano

A

n x10^-9

31
Q

Pico

A

p x10^-12

32
Q

Gravity

A

9.81 m/s^2

33
Q

Non-uniform acceleration

A

unequal changes in equal intervals of time

34
Q

Conservation of momentum

A

total momentum before = total momentum after (as long as no external forces act on them)

35
Q

Elastic collision

A
  • 2 objects collide and move apart in two directions
  • momentum is conserved
  • kinetic energy is conserved
36
Q

Inelastic collision

A
  • 2 objects collide and stick together (same direction)

- kinetic energy is not conserved (some has been lost) this is most collisions

37
Q

Moment

A

total clockwise moment = total anticlockwise moment

38
Q

Types of Energy

A
  • light
  • thermal
  • sound
  • kinetic
  • chemical potential
  • elastic potential
  • gravitational potential
  • nuclear
  • electrical
39
Q

Conservation of energy

A

Energy cannot be created or destroyed only transferred

40
Q

Waste energy

A

is generally given out as heat and light which dissipates to the surroundings

41
Q

What does the stiffness depend on?

A
  • material thickness
  • material length
  • material itself
42
Q

Projectiles

A

objects that are thrown or launched into the air and are subject to gravity

43
Q

Projectile motion

A

curved path that an object follows when thrown/launched

44
Q

Work done

A

equals energy transferred

Physics (12 decks)

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