Show:
Motion
Forces and Motion
Work and Energy
Simple Machines
What are Compound Machines
100
What is motion?
Motion is a change in position overtime
100
What is a force?
a force is any push or pull from one object to another
100
what is work?
Work is the measurement of the energy used to perform a task
100
Whats a simple machine?
a simple machine is a machine that takes one force and changes its direction, distance, or strength
100
in a compound machine the rubbing of serfaces converts what?
the energy into heat
200
What is a position?
A position is the location of an object.
200
gravity [________] as distance [_________].
decreases increases
200
does work=Force x Distance
yes
200
the force you apply to a machine is called {_____}
effort.
200
when two or more simple machines are combined it forms a
Compound Machine
300
What is a Frame Of Reference?
a Frame of reference is a group of objects from which you can measure a position or the motion.
300
Momentum is the [________] of {____} multiplied by velocity.
product, mass
300
kinetic energy is the energy of a {______} object
moving
300
the force a machine supplies is {______}
output
300
efficiency is?
efficiency is the ratio of input energy to out put work
400
What is speed?
Speed is how fast an object's position changes over time.
400
Is an unbalanced force when forces act on an object without changing its motion?
NO!
400
name 3 ways you can use energy
lifting, dropping, throwing
400
the object moved by the output is called the {_____}
Load.
400
is a lever a compound machine
NO
500
What is Velocity?
Velocity is the measurement that combines both the speed and the direction of a moving object
500
What is Newtons secont law?
The unbalanced force on an object is equal to the mass of the object multiplied by its acceleration.
500
Energy is the ability to perform what?
work or change an object
500
the {______} {____} is the part of a simple machine that receives the effort
effort arm.
500
what are the six simple machines
lever, pulley, wheel and axle, inclined plane, wedge, and screw.