It depends on the context. A foot is a hopelessly inaccurate unit if you want to measure the thickness of a single hair. On the other hand it is extremely accurate if measuring the distance to the moon at a particular point in time.
unit of measurment.
newtons
no its a unit of measurment
A unit of measure is an officially standard used to make measurements.
When theoritical and practical values are same it can be said that our measurment is accurate.
if its not packed you wont get an accurate measurment
No, they are simply a different unit of measure.
Millimeters or inches
Metres.
ounce
None. a foot measurment contains 12 inches (so 12 inches to every foot)
It is a measure of speed in a specific direction