Physical Science Ch3

What quantity represents any change in an object's position?

What is the term for a measure of how much help a machine provides?

The attractive force between 2 masses

What is the rate of doing work?

What branch of physics addresses the effects of forces on matter?

What SI unit is used to measure the rate of doing work?

What is the rate of an object's change in position over time?

Principle states velocity of an object doesn't change unless there is an exteral force

The sum of two or more vectors is the resultant?

The distance an object travels per unit of time is

What quantity of motion is mathmatically defined as the product of an object's mass and velocity?

What is a math quantity that has magnitude and direction?

Who discovered the laws of motion and gravity?

What principle states for every action there is an equal opposite rection?

The study of forces and motion is

What type of quantity consisits of only a magnitude, with no direction?

What is a combination of one or more fixed pulleys and one or more moveable pulleys

The measure of how well a machine converts input work to output work

The SI unit for work.

What is a simple machine consisting of a wheel and a rope.

_________ is the transfer of energy from on object to another by a force.

What is it called when air resistance stopps a falling object from accelerating?

What simple machine is a sloping surface that allows an object to be raised without being lifted striaght up?

What is the output distance of a screw?

The branches of physics discovered before 1900

How are levelers classified?

His teachings dominated scientific thought for almost 2,000 years.

Friction that affects stationary objects

Ab object that hangs and swings back and forth from a fixed point.

A device that is a circular lever and multiples distance, speed, or force.

The simple machine like an incline plane

The center force that causes objects to travel in a curved path

The space relatice to which motion is measured is the

Sliding an object already in motion