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miles
inches
gallons
6 m would be used to measure flagpole. 600 m is a bigger unit.
you would need a high speed video camera and a really good stop watch like one that has split timing to 1000 of a second and then film some one blinking normally with the stop watch next to their eyes so when you play the film back you can do it frame by frame so you can see the blinks and the time and calculate it from there.
division
The Unit Used To Measure A Train Can Be Kilometer.
miles
cm
What measure of units would you use to measure the thickness of a phone book
Which unit would you use to measure the water in a full tub?
Feet
to measure a small trashcan
you would measure it with feet
Kilograms
miles
grams which unit would you use to measure the mass of a mouse