The term describing the measure of gravitational force acting on a mass is "weight".
A brick may weigh 6 pounds on earth but the same brick will weigh only 1 pound on the moon. The mass is the same here or there, but the gravitational force on the moon is only one sixth of the gravitational force on earth.
swinging your arms around in circles very quickly
Melting Point
TRUEFriction is the reason more force is needed to push an object across a rough surface.
Which of what ? There's no list of choices, no examples,
no suggestions, nothing to choose from.
when net force is zero
megaminx
measurements should be made precisely to ensure accuracy (:
Resistance from air.