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Forces
Question | Answer |
---|---|
what is a force | a push or a pull on an object |
the measurement of force... | 1 newton is the amount of force required to give 1 kg mass and acceleration of 1 m/s2. must have direction; vector |
what is gravitational force | an attractive force between 2 bodies; the weakest force |
what is electromagnetic force | charged particles at rest exert electric forces on each other. charged particles in forces |
what is strong nuclear force | holds particles of the nucleus together, strongest of all forces |
what is a weak force | form of an electromagnetic force. happens when some nuclei radio activity decay |
what is a balanced force | no acceleration; forces are equal |
what is an unbalanced force | motion velocity acceleration; forces aren't equal |
when forces are equal... | the object won't move |
what is a net force | the sum of all forces acting on an object |