Chapter 1 - Physical Quantities, Units And Measurement Flashcards
SI unit and symbol of length
Meter. m
Unit of base quantities?
SI units
SI unit and symbol of mass
Kilogram. Kg
SI unit and symbol of time
Second. S
SI unit and symbol of Electric current
Ampere. A
SI unit and symbol of temperature
Kelvin. K
Celsius. C
SI unit and symbol of amount of substance
Mole. Mol
SI unit and symbol and expression of force
Newton. N. (m kg)/s^2
SI unit and symbol and expression of pressure
Pascal. Pa. kg/(m s^2) or N/m^2
SI unit and symbol and expression of energy,work,quantity of heat
Joule. J. (m^2kg)/s^2
Length can be measured with? (4)
Meter rule, tape measure, calipers, screw gauge
Time is usually measured in?
Hours minutes seconds
Time can be measured using
Pendulum clock, stopwatch
What are scalar quantities
Quantities that can be fully described by magnitude only
What are vector quantities
Quantities that can be fully described by both magnitude and direction
What quantity is length, speed and mass
Scalar
Is pressure a scalar or vector quantity
Scalar
What quantity is temperature, volume and density?
Scalar
What is an example of vector quantity
Velocity/force/displacement/acceleration/momentum
Is velocity a scalar or vector quantity
Vector
What quantity is acceleration
Vector
What if two parallel forces are acting on the same direction?
The resultant force will be equal to the two forces added together
What of two parallel forces are acting in opposite directions?
The resultant force will be equal to the larger force minus the smaller force
