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Science Ch. 3 & 4

QuestionAnswer
a force that acts in a direction opposite to the motion of the moving object friction
kind of friction results from objects sliding over each other sliding friction
kind of friction is produced by objects such wheels or ball bearings rolling friction
friction between two solid surfaces can be either ________ friction or ___________ friction sliding; rolling
kind of friction occurs when an object moves across or through a fluid fluid friction
three examples of fluids air, water, oil
substances in the liquid and gas phase fluids
one example of fluid friction air resistance
kinds of substances change sliding friction into fluid friction lubricants
three examples of lubricants oil, grease, wax
three ways in which friction is beneficial walking, car brakes, chalk on hands, etc
the tendency of an object to remain at rest or in motion inertia
an object at rest will stay at rest and an object will stay in motion unless a force acts upon it Newton's First Law of Motion
the formula that expresses Newton's Second Law of Motion F=ma
Force required to accelerate one kilogram of mass at one meter per second squared One Newton
One kilogram X meters/second squared Units for a Newton
for every action there is an equal & opposite reaction Newton's Third Law of Motion
a moving bus stops you fall forward Newton's First Law of Motion
a bird's wings enable it to fly through the air Newton's Third Law of Motion
a small car gets better gas mileage than a large car Newton's Second Law of Motion
Created by: hunter_kaitlyn
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