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Physics > trajectory > Flashcards

trajectory Flashcards

1
Q 
Energy
Equation for energy
symbol for energy
SI
closely related
Kettle power rating 2200 watts for 80sec what's energy
How many joules in kilojoules
fan power 20 watts 1 hour
iron used 5 mins 600,000 j what's power
A 
1
E = IVT,     E = PT
E  genie
 joule
Mass
176 KJ
1000
72 KJ
2000w
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2
Q

waves
what are two types of waves?
what do waves travel through?
Equation for wavespeed

A

2
transverse and longitudinal
a medium
Wave speed = frequency x wavelength

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3
Q

density

Equation for density

A

3

mass/volume

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4
Q

force
What is the measure of force
How can you measure the force of an object?
What is the force that causes planets and comets to orbit the sun?

A

star wars
Newtons
Spring balance or Newton balance.
Gravitational force (gravity but mark schemes normally prefer that)

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5
Q 
momentum
symbol
unit
is a 
equation for momentum?
Equation to show increase in momentum:
A 
xtratherm
P Moon
Kilogram metres per second (kg m/s) 
vector 
Momentum = mass x velocity
Force x time = increase in momentum
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6
Q

work

A

tip

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7
Q

power

A

mam sink

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8
Q 
gravity
came up with
Causes the planets to orbit 
Causes comets to orbit 
Causes the moon and artificial satellites to orbit
A 
gravy
Newton
Causes the planets to orbit the sun
Causes comets to orbit the sun
Causes the moon and artificial satellites to orbit the earth
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9
Q

electricity

A

7

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10
Q

Astronomy

spelling

A

ashtray

ron

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11
Q

efficiency symbol

equation for efficiency

A

5 fish splashing

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12
Q

light loc
What is the speed of light?
What happens when a ray of light enters an optically denser substance?
What happens when a ray of light leaves an optically denser substance?

A

4 flashing in eyes
300,000,000 m/s
It bends towards the normal /normal symbol plate

It bends away from the normal

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13
Q

What is a plane mirror? loc

A

A flat mirror sky

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14
Q

What is specular reflection? loc

All the incident ray is reflected

A

6

All the incident ray is reflected at the same angle

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15
Q

What is diffuse reflection?

All the incident ray is reflected at

A

8 orange juice

All the incident ray is reflected at lots of different angles

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16
Q

What is the angle of incidence equal to?

A

9 cricket bat

The angle of reflection

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17
Q

reflected image loc
Objects are the
The image is

A

mirror
same size
virtual

Same distance away from the mirror
Laterally inverted - left and right sides are swapped.

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18
Q

What is refraction?
The bending of
Will a refracted ray ever bend beyond the normal?

A

10 my hat
a light ray
No (so there is no bending when a ray crosses a boundary at a right angle)

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19
Q

Will a refracted ray ever bend beyond the normal?

A

No (so there is no bending when a ray crosses a boundary at a right angle)

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20
Q

If the two boundaries of the substance are parallel what will the rays be? loc

A

parallel

subs bench

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21
Q

What is Snell’s Law? loc

A

11

22
Q

What is total internal reflection used in? loc

A

13

Prisms in periscopes, binoculars and bicycle reflectors, optic fibres

23
Q

virtual image?

A

14

24
Q

When does total internal reflection happen?

A

When you go from a more optically dense object to a less optically dense object

25
Q

magnifying lens

A

15

26
Q

luminous

A

16

27
Q

non-luminous

A

17

28
Q

critical angle

A

cricket pitch

29
Q

elastic collision

A

18

30
Q

inelastic collision?

A

19

31
Q

collision?

A

train

32
Q

newton’s first law called loc

A

inertia 20

33
Q

Isaac newton
Born
resting place

A

21
Woolsthorpe-by-Colsterworth,
Westminster Abbey

34
Q

frictional
is a
does what to motion
What is the frictional force proportional to?

A

fiction
force
opposes motion.
The force pressing the surfaces together.

35
Q

spring loc
What is the elastic limit of a spring?

spring elastic?

A

22
Where is no longer stretches uniformly and no longer obeys hookes law.
yes

36
Q

wire?

A

23

37
Q

elastic band?

What happens as you continue to add force to an elastic band?

A

24

It becomes more difficult to stretch

38
Q

Hooke’s law
regards
forumla

A

25
spring
F=kx

39
Q

elastic behaviour?

what is it

A

26

recover its original shape after the forces have been removed

40
Q

rubber band

Is a rubber band elastic?

A

27

no

41
Q

Metal wire

Is a metal wire elastic?

A

28

yes

42
Q

planet

A

football gpost

43
Q

milky way

A

shop

44
Q

Asteroid belt

Where is the asteroid belt in our solar system?

A

convey extra belt

In between mars and saturn

45
Q

comets?
type of orbit
when travel fastest
Where do the tails of comets always point

A

bus stop
elliptical orbits
When they are closest to the sun
away from the sun

46
Q

Earth

What is our solar system a part of?

A

cap

The milky way galaxy

47
Q

Weight

What is the equation for weight?

A

weights gym

mass x gravitational field strength

48
Q

galaxy?

What is a galaxy?

A

29

A large collection of billions of stars

49
Q

universe?

What is the universe?

A

30

A large collection of billions of galaxies

50
Q

moon
What is the gravitational field strength on the moon?
takes to orbit the earth

A

cow
1.6 N/kg
Orbits the earth with a period of about 28 days

51
Q

Jupiter

A

Pit

Physics (21 decks)

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