Vocab
This is a force that keeps objects from moving against other objects
What is friction?
This is needed to determine whether an object has changed position
What is a reference point? (fixed, unmoving object or location)
Objects with greater or less mass have stronger gravitational pull
What is greater?
This is the spot where a lever turns or pivots
What is the fulcrum?
Force (newtons) x _____ = Work (Joules)
What is Distance (meters)?
This is the change of an object's position
What is motion?
This is how velocity and speed differ
What is velocity refers to speed and direction
This law states that an object tends to stay at the same velocity unless another force causes it to change
What is the First Law of Motion?
Force is measured in this
What is newtons (N)?
Distance / ____ = Speed
What is Time?
Potential and kinetic energy are two forms of this
What is mechanical energy?
This must be applied to an object for acceleration to occur
What is force? (a push or pull)
This man formulated the three laws of motion
Who is Sir Isaac Newton?
This unit measures work
What is a joule?
? = Speed x Time
What is distance?
This is resistance to a change in motion
What is inertia?
This occurs whenever an object speeds up, slows down, or changes direction
What is acceleration?
This law states that force is equal to an object's mass and the acceleration of the object
What is the Second Law of Motion?
This lever has the resistance between the effort and the fulcrum
What is a second-class lever?
Force = ? x Acceleration
What is mass?
This is the distance an object moves over a given amount of time in a certain direction
What is velocity?
The two things determine an object's momentum
What are mass and velocity?
This law is known as the "law of action and reaction"
What is the Third Law of Motion?
This lever has the effort between the resistance and the fulcrum
What is a third-class lever?
You move a box that weighs 20 newtons 3 meters. You have done this much work
What is 60 joules?