Vocab #1
Vocab #2
Vocab/Newtons Laws
Simple Machines
100
What is gravity?
A noncontact force that pulls any two objects with mass together.
100
What is centripetal force?
An inward force that pulls or pushes an object towards the center.
100
What is friction?
A force that occurs when two objects slide across each other.
100
What is a simple machine?
Mechanical devices that change the direction or magnitude of a force.
200
What is tension force?
A force applied to an object through anything that is like a string, thread, or cable.
200
What is kinetic energy?
The energy of matter in motion.
200
What is Newton's Law #1
Inertia---an object at rest tends to stay at rest.
200
List at least three types of simple machines.
Options: Lever, screw, pulley, wedge, wheel & axle, inclined plane.
300
What is applied force?
A force that is applied to an object by something else.
300
What is potential energy?
Stored energy.
300
What is Newton's Law #2?
Force equals mass times acceleration (F = MA)
300
What type of simple machine is this?
A wedge.
400
What is electromagnetism?
A noncontact force between particles that have a charge.
400
What is strong nuclear force?
A force that keeps protons and neutrons together in an atom's nucleus.
400
What is Newton's Law #3?
Every action has an equal and opposite reaction.
400
What kind of simple machine is this?
A screw.
500
What is air resistance?
The frictional force an object experiences when it moves through the air.
500
What is weak nuclear force?
A force that allows protons and neutrons to change into eachother.
500
What is normal force?
The force that two objects have on each other when they are touching.
500
What is a joule?
A measure of work.