The six different simple machines are: the ____, the ____, the ____, the ____, the ____, and the ____
What is lever, inclined plane, wedge, pulley, wheel and axle, and screw
100
What does zero point grade mean?
What is completely flat
100
A balanced force occurs ___________________________
What is when the individual forces are equal in strength and opposite in direction
100
A push or pull that changes the movement of an object
What is force
200
A metric unit used to measure work, equal to one newton meter
What is joule
200
A device that makes work easier and which has few or no moving parts
What is a simple machine
200
What does 100% grade mean?
What is 45 degrees
200
An unbalanced force is when _____________________
What is separate forces are not equal in strength or they are not opposite in direction
200
The result of a force applied to an object causing it to move
What is work
300
A beam or bar that pivots on a fixed point
What is a lever
300
An example of a first class lever, a second class lever, and a third class lever.
What is first class: sea saw. Second class: nut cracker or pushing a wheelbarrow. Third class: forceps or riding a bike
300
Newton's first law is _____________________________
What is An object at rest will stay at rest, and an object in motion will stay in motion at constant velocity, unless acted upon by an unbalanced force
300
True or False: A rocket needs an unbalanced force in order to leave Earth
What is True
300
An object's resistance to any change in motion
What is inertia
400
A measure of the distance an object moves in a given amount of time
What is Speed
400
The force applied to a simple machine
What is effort
400
Newton's second law is ____________
What is Force equals mass times acceleration
400
If an object is at rest, an unbalanced force will cause ______
What is movement
400
A measure of an object's speed and direction
What is velocity
500
The change in an object's velocity over a period of time
What is Acceleration
500
Why are simple machines important in our lives?
What is they make our lives easier
500
Newton's third law is __________________
What is For every action there is an equal and opposite reaction