22 terms

LisaMLittleTEACHER

Newton's Third Law

For every action there is an equal and opposite reaction

vector quantity

magnitude and direction

force, velocity and acceleration

vector quantities

scalar quantity

a quantity that can be described by magnitude only and has no directionv

vector

an arrow drawn to scale used to represent a vector quantity

resultant

the sum of two or more vectors

component

mutually perpendicular vectors as in those illustrated by a stone's throw

resolution

process of determining the components of a vector

Newton's first law

an object at rest tends to remain at rest;an object in motion tends to remain in motion at constant speed along a straight line path

Newton's second law

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

law of acceleration

Newton's second law

net force when objects fall in a vacuum

net force is weight, pull of gravity, no air resistance

Terminal Speed/Velocity

The speed at which the acceleration of a falling object terminates because air resistance balances its weight.

acceleration of a car is caused by what force

the road pushes back on the motion of the tires

the law of action-reaction

Newton's third law

inertia

mass is the measure of ___________________

speed

measures how fast an object is going

velocity

measure speed and direction of an object

helicopter hovers

when lift equals weight of helicopter

when lift is greater

the heliocopter moves upward

downward

birds fly by pushing air downward

yes

when a bug and car collide do both experience the same force