NATS 1530 Quiz: quiz 3 material

• School: York University
• Department: Natural Science
• Course: NATS 1530
• Professor: robin metcalfe

Document Summary

State whether the following forces are contact forces or field forces: gravity, friction, magnetism, tension, air resistance. Force: a push or pull exerted on an object from either a contact or a force field. Acceleration (eg, motion from rest) arises from imbalance of forces. * tension is a contact force because if you cut a cable the dock wouldn"t move. * friction force happens when two things rub against each other in this case a dock against the ground which is a contact force. Mass: the measure of how much mass an object possess (sum off all the atoms) Mass is a fixed quantity (number of atoms will not change) whether it"s on earth or. Gravity: an attractive force exerted by all objects with mass: greater mass the stronger pull. Weight: measure of a pull of gravity exerted by a planet on an object"s pulled gravity field. On earth 1kg object is 10 newtons.