1 2 3
the law of action and reaction
3rd law of motion
what occurs when an object speeds up slows down or changes direction
Acceleration
what type of machine is a jar lid
screw
The ability to make something move
Mechanical energy
What type of machine combines 2 or more machines to make work easier
Compound machine
an objest at rest stays at rest an object in motion stays in motion
1st law of motion
the spot where a lever turns
Fulcrum
type of machine is a flagpole
Pulley
Resistance to changing motion
Inertia
What machine combines multiple fixed and movable pulleys
Block and tackle
mass x acceleration = Force
2nd law of motion
What is the decrease in effort that is needed to move an object called
A mechanical advantage
Which machine is a bar that turns on a point
A lever
What is the change of an object's position
motion
Which machine consists of two inclined planes back-to-back
Wedge
In regards to inertia gravity keeps an object from moving indefinitely in what
A straight line
The ________ of an object is determined by its mass and velocity
momentum
What type of machine is a broom
Lever
What force works against the effort
Resistance
Which machine is an inclined plane on a cylinder
screw
Who is credited with the three laws of motion
Sir Isaac Newton
Which unit is used to measure work
joule
The machine is a doorknob
Wheel and axle
a fixed unmoving object or location is the
Reference point
Which simple machine makes work easier by either changing the direction of force or producing the amount of force
A pulley