The flashcards below were created by user
jpopat
on FreezingBlue Flashcards.
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State the unit for the quantity: mass
kilogram (kg)
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State the unit for the quantity: length
metre (m)
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State the unit for the quantity: time
second (s)
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State the unit for the quantity: temperature
kelvin (K)
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State the unit for the quantity: electrical current
ampere (A)
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State the unit for the quantity: amount of substance
mole (mol)
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State the multiple (power of 10) for the prefix: tera-
1012
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State the multiple (power of 10) for the prefix: tera-
109
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State the multiple (power of 10) for the prefix: mega-
106
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State the multiple (power of 10) for the prefix: kilo-
103
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State the multiple (power of 10) for the prefix: centi-
10-2
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State the multiple (power of 10) for the prefix: milli-
10-3
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State the multiple (power of 10) for the prefix: micro-
10-6
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State the multiple (power of 10) for the prefix: nano-
10-9
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State the multiple (power of 10) for the prefix: pico-
10-12
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State the multiple (power of 10) for the prefix: femto-
10-15
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State the multiple (power of 10) for the prefix: atto
10-18
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SCALAR quantity
has magnitude ONLY and is completely described by a number and appropriate units.
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VECTOR quantity
has both magnitude (size) and direction stated to be completely described
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List 6 vector quantities
- Velocity
- Displacement
- Acceleration
- Force
- Weight
- Momentum
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List 8 scalar quantities
- speed
- distance
- mass
- time
- density
- energy
- power
- temperature
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In scale drawing, arrows should be drawn ............. to ..............
head to tail
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What is the alternative to scalar drawing?
Pythagoras or trigonometry
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When asked for the resultant, which two pieces of information should you give in your answer
The force/magnitude (length of the line) and direction (the angle)
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A vector is resolved by which metod (finding x and y values)
Trigonometry - Cos and Sin mainly
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An object is in equilibrium if
The forces acting in all directions are equal and so the resultant is 0
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Displacement is
the straight line distance from any given point in a stated direction
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Instantaneous speed is
the speed at a given instant of time
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Average speed=
Average speed = Distance / Time
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Velocity=
Velocity = Displacement / Time
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Acceleration=
Acceleration = Change in Velocity / Time
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On a velocity-time graph a horizontal line represents
Constant velocity, no acceleration
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On a velocity-time graph a straight line slope shows
constant acceleration
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On a displacement-time graph a horizontal line represents
Stationary object, no velocity
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A displacement-time graph with a straight line slope shows
positive/negative constant velocity
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How can you find displacement from a velocity-time graph?
Area under the curve
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In SUVAT equations, what does s stand for?
Displacement
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In SUVAT equations, what does u stand for?
Initial velocity
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In SUVAT equations, what does v stand for?
Final velocity
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In SUVAT equations, what does a stand for?
Acceleration
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In SUVAT equations, what does t stand for?
Time
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List the four SUVAT equations
- s = ut + 1/2at2
- v = u + at
- s = 1/2(u + v)t
- v2 = u2 + 2as
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Gravity is s_ _ _ _ _ _ _ _ _ _
symmetrical
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Acceleration due to gravity is
9.81ms-2
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