The following quantities are vectors

• force, momentum, displacement
• acceleration, speed, work
• time, velocity, force
• weight, energy, mass

Typical mass of a 30 cm plastic rule

• 10 - 100 g
• 1 - 30 g
• 1 - 150 g
• 5 - 150 g

This equation is homogeneous since

• the base units on the left don't equal the base units on the right
• the base units on the left equal the base units on the right
• mass has base units of kg but no kg appears in pressure base units
• volume has no base units in common with pressure

The SI base unit is

• metre
• Newton
• Kelvin
• Centigrade

The SI base unit is

• Ampere
• Watt
• Volt
• Ohm

The SI base unit is

• kilograms
• grams
• Newton
• milligrams

The SI base unit is

• second
• minute
• millisecond
• hour

The SI base unit is

• metre
• inch
• kilometre
• millimetre

The average volume of a human head is

• 4x10^-3m³
• 4x10^-3cm³
• 4x10^-3mm³
• 4x10^-5m³

Average mass of an orange

• 100 - 150 g
• 10 - 100 g
• 50 - 250 g
• 5000 - 10000 mg