Matter and Energy Test 2

velocity at which air resistance stops a falling object from accelerating

what is the output distance of a screw

mathematical quantity with both magnitude and direction

what is the rate of doing work

branch of physics addressing effects of forces on matter

what is any variation in the rate of the object's change in position over time

an object that hangs from a fixed point and swings back and forth

simple machine with circular lever that multiples force OR speed

quantity that represents any change in an objects position

whose teaching dominated scientific thought for almost 2000 years

center seeking force

the branches of physics discovered before 1900

type of friction that affects stationary objects

quantity of motion mathematically defined as Mass X Velocity

for every action there is an equal and opposite reaction

describe work and energy

simple machine : sloping surface to raise object without lifting it

who discovered laws of motion and gravitation

quantity with only magnitude….NO direction

how are levers classified

a car that travels 100 meters in 20 seconds it traveling

the sum of two or more vectors

term for how much help a machine provides

which of the following is true of simple machines

simple machine that is an inclined plane that modifies applied force, directing to one side.

a simple machine with a rope or cable over a wheel

combination of fixed and movable pullies

how far will an object fall in 3 seconds affected only by gravity

the distance an object travels per unit of time

study of motion and forces

attractive force between any two objects

what is the momentum of a 100kg ball rolling at 5 m/s

SI unit to measure rate of doing work

velocity of an object does not change unless acted on by external force

a crate is pushed left by 255N and right by 55N . What is net force?

measure of how well a machine converts input work into output work

space relative to which motion is measured

Si unit of work

what is the idea mechanical advantage of an inclined plane 6m long 2m high

devices used to multiply force to do work

the sliding of an object in motion is affect by