Definitions
A measurable property that must include a number and a unit.
What is a physical quantity?
The SI unit for length.
What is metre?
Convert 200 cm to metres.
What is 2m?
Distance travelled per unit time.
What is speed?
True or False: Mass and weight are the same thing.
What is False?
The quantity that tells how heavy an object is, regardless of location.
What is mass?
The SI unit for mass.
What is the kilogram?
Convert 500 g to kilograms.
What is 0.5kg?
The formula used to calculate density.
What is density = mass ÷ volume?
True or False: All Physics calculations must use SI units.
What is True?
The quantity used to measure how long an event lasts.
What is time?
The SI unit for time.
What is second?
Convert 3 minutes to seconds.
What is 180 s?
Derive the SI unit of pressure.
What is N m⁻² or pascal (Pa)?
A student measures time in minutes. What must be done before calculations?
What is convert minutes to seconds?
The distance from one point to another.
What is length?
The SI unit for amount of a substance.
What is mole?
Convert 0.75 kg to grams.
What is 750 g?
Express force only in base units.
What is kg m s⁻²?
Which quantity does NOT change with gravity: mass or weight?
What is mass?
The measure of the rate at which electric charge flows through a conductor
What is Electric Current?
A student measures the following during an experiment: Distance, Time and Mass of an object. To ensure the data is suitable for Physics calculations, state all three correct SI units that must be used.
What are metre (m), second (s), and kilogram (kg)?
An object moves a distance of 2.75 km in 4.5 minutes. Convert both quantities fully into SI units before any calculation.
What is 2750 m and 270 s?
Explain how the SI unit of pressure is derived from force and area using base units.
What is: pressure = force ÷ area, force = kg m s⁻², area = m², so pressure = kg m⁻¹ s⁻²?
A length is measured as 0.004876 m. Convert this length into millimeters and round your final answer to 2 decimal places.
What is 4.88 mm?