Vocab & Units Flashcards
(42 cards)
1
Q
Length
A
m
2
Q
Mass
A
kg
3
Q
Time
A
s
4
Q
Force
A
N
5
Q
Energy
A
J
6
Q
Power
A
W
7
Q
Newton derived
A
kg ms^-2
8
Q
Joule derived
A
kg m^2 s^-2
9
Q
Watt derived
A
kg m^2 s^-3
10
Q
kilo & symbol
A
10^3 (K)
11
Q
mega & symbol
A
10^6 (M)
12
Q
giga & symbol
A
10^9 (G)
13
Q
tera & symbol
A
10^12 (T)
14
Q
peta & symbol
A
10^15 (P)
15
Q
milli & symbol
A
10^-3 (m)
16
Q
micro & symbol
A
10^-6 (μ)
17
Q
nano & symbol
A
10^-9 (n)
18
Q
pico & symbol
A
10^-12 (p)
19
Q
femto & symbol
A
10^-15
20
Q
pressure derived
A
kg m^-1 s^-2
21
Q
Pressure
A
Pa
22
Q
Instantaneous Speed
A
The rate at which the distance travelled is changing at a moment in time
23
Q
Displacement
A
The distance travelled in a certain direction
24
Q
Velocity
A
The rate of change of displacement
25
Vector Quantity
Has both Magnitude and Direction
26
Scalar Quantity
Has only Magnitude
27
Acceleration
The rate of change of Acceleration
28
Free Fall
The only force acting on it is gravity
29
Newton
The force that will give a mass of 1 kg an acceleration of 1 ms^2
30
Moment
Magnitude of Force X Perpendicular distance of its line of action from the pivot
31
Couple
A pair of forces that are equal in magnitude but act in opposite directions
32
Torque of a couple
magnitude of one force X perpendicular distance between them
33
Conditions for Equilibrium
Resultant Force is 0, Resultant Torque is 0
34
Centre of Gravity
The point through which weight acts
35
Pressure
Force per unit area
36
Density
Mass per unit volume
37
Joule
Energy transferred when a force of 1 newton moves 1 metre.
38
Power
The rate at which energy is transferred
39
Watt
1 joule per second
40
Ductile Material
A material that stretches a lot beyond the elastic limit
41
Brittle Material
A material that snaps when it reaches the elastic limit
42
Polymeric Material
A material that does not show a linear behaviour
