Unit Review - Forces and Motion
Terms in this set (39)
Change in velocity over time. It includes speeding up, slowing down (deceleration) or changing direction.
A force that is applied from one object to another. It is usually considered the initial or starting force, or the object that is "hitting" the other object.
The force of friction that air exerts on a moving object (sometimes called fluid friction). It involves a solid moving through a gas.
Force that results in no change in motion
The factor that may change in response to manipulations of the independent variable.
The ability to do work.
To follow the trend or pattern in the data to extend the line in order to find unknown data points (adding data "outside" the drawn line)
A type of friction that occurs when an object moves through a fluid. It is sometimes referred to as air resistance when objects move through the air.
Any substance that can flow, usually a liquid or a gas
A push or pull
Frame of reference
The object an observer uses to measure motion by. This object is usually stationary in relation to the earth.
force that opposes (goes against) the direction of motion. It causes objects to slow down and eventually stop.
A measure of the force of attraction that depends on the mass of two objects and the distance between them.
An increase, addition or gain by regular consecutive amounts.
The factor in an experiment that a scientist purposely changes. This is the variable that causes a change in the dependent variable.
An object's resistance to a change in its motion. (An object wanting to keep doing what it is already doing)
To find unknown data points within known data points (finding data "inside" the drawn line)
A visual representation of a relationship between two factors for a relationship that is continuous (unlike pie charts and histograms)
Line of best fit
A smooth line that reflects the general pattern of a graph, passing near or through graphed data; used to describe data and predict where new data will appear on the graph.
The amount of matter in an object
The strength or force that something has when it is moving. Determines how difficult it is to stop an object's motion. The momentum of an object is mass times velocity. (Momentum (P) =mv).
The change of an object's position relative to another position
Unit of measurement for force (N)
Newton's First Law of Motion
An object at rest will stay at rest, an object in motion will stay in motion unless acted upon by an unbalanced force
Newton's Second Law of Motion
F=MxA where F is force, M is mass and A is acceleration. This equation describes how force is related to the mass of an object and the rate at which it accelerates. (This law can be used to explain why objects with mass being accelerated by gravity have weight.)
Newton's Third Law of Motion
For every action there is an equal and opposite reaction. This law describes the relationship between any two objects that collide or hit each other.
The point (0,0) where the x-axis and the y-axis intersect in a coordinate plane.
To place a point on a graph that represents the information from the data
The curved path that an object follows when thrown, launched or otherwise projected near the surface of Earth
The force that is applied from the object getting hit, back onto the object that hit first.
A state of not moving
A type of friction that occurs when an object rolls over a solid surface.
The assigning of numbers to the x and y axis on a graph. The increments must be equal between each line on the graph.
A type of friction that occurs when solid surfaces slide over each other.
The distance an object travels in a certain period of time. (Speed = Distance/Time.)
The type of friction that opposes the motion of objects that are not moving. Static friction is always greater than kinetic friction. All stationary objects must overcome static friction to start moving.
A force that causes an object to start moving, stop moving or change direction
Speed in a given direction
A measure of the pull of gravity on an object. (The amount of force gravity causes the mass of an object to exert.) Weight changes based on the location of an object.
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