Chapter 4 Flashcards
motion
the action or process of moving or of changing place or position; movement.
speed
he rate at which someone or something is able to move or operate.
velocity
the speed of something in a given direction.
acceleration
increase in the rate or speed of something.
force
strength or energy as an attribute of physical action or movement.
newton
the SI unit of force. It is equal to the force that would give a mass of one kilogram an acceleration of one meter per second per second
net force
With its associated torque, the net force becomes the resultant force and has the same effect on the rotational motion of the object as all actual forces taken together. It is possible for a system of forces to define a torque
friction
surface resistance to relative motion, as of a body sliding or rolling.
gravity
the force that attracts a body toward the center of the earth, or toward any other physical body having mass. For most purposes Newton’s laws of gravity apply, with minor modifications to take the general theory of relativity into account.
wieght
a heavy object, especially one being lifted or carried.
a heavy object used to give an impulse or act as a counterweight in a mechanism.
a heavy object propelled by a shot-putter.
blocks or discs of metal or other heavy material used in weightlifting or weight training.
plural noun: weights
3.
the ability of someone or something to influence decisions or actions.
“a recommendation by the committee will carry great weight”
synonyms: influence, force, leverage, sway, pull, importance, significance, consequence, value, substance, power, authority; informalclout
“his recommendation will carry great weight”
the importance attached to something.
“individuals differ in the weight they attach to various aspects of a job”
STATISTICS
a factor associated with one of a set of numerical quantities, used to represent its importance relative to the other members of the set.
mass
a coherent, typically large body of matter with no definite shape.
