160122 Flashcards
what is a vector?
something with both direction and magnitude (weight)
what is a scalar?
something with just magnitude and no direction (mass)
what is newton’s first law?
An object will stay at rest or continue moving at a constant velocity unless acted on by an external force
Define terminal velocity
a state where an object does not increase in velocity as frictional forces match the acceleration
what is newton’s third law?
Every action has an equal and opposite reaction
Principle of Movement
When an object is at equilibrium, the c/w forces equal the ac/w forces
what is newton’s second law?
F=ma
List all non-contact forces
electrostatic, magnetic and gravitational
Stopping Distance definition
the distance between object being spotted and the car halting
Define a magnet
A material with a magnetic field
Name all magnetic metals
Iron, Nickel and Cobalt
Properties of permenant magents
Attract other magnets and induce magnetism
Force for attraction
Opposites attract and like repel
Align to already existing magnets
