vocab week 1-1  


     vocab week 1-2 
    1. physics:the science concerned with describing the interactions of energy, matter, space, and time; it is especially interested in what fundamental mechanisms underlie every phenomenon
    2. accuracy:the degree to which a measured value agrees with correct value for that measurement
    3. approximation: an estimated value based on prior experience and reasoning
    4. conversion factor:a ratio expressing how many of one unit are equal to another unit
    5. derived units:units that can be calculated using algebraic combinations of the fundamental units
    6. fundamental units:units that can only be expressed relative to the procedure used to measure them
    7. law:a description, using concise language or a mathematical formula, a generalized pattern in nature that is supported by scientific evidence and repeated experiments
    8. model:representation of something that is often too difficult (or impossible) to display directly
    9. precision:the degree to which repeated measurements agree with each other
    10. theory:an explanation for patterns in nature that is supported by scientific evidence and verified multiple times by various groups of researchers

     vocab week 1-3 


    1. acceleration:the rate of change in velocity; the change in velocity over time
    2. average acceleration:the change in velocity divided by the time over which it changes
    3. displacement:the change in position of an object
    4. distance:the magnitude of displacement between two positions
    5. distance traveled:the total length of the path traveled between two positions
    6. instantaneous acceleration:acceleration at a specific point in time
    7. instantaneous velocity:velocity at a specific instant, or the average velocity over an infinitesimal time interval
    8. kinematics:the study of motion without considering its causes
    9. slope:the difference in y -value (the rise) divided by the difference in x -value (the run) of two points on a straight line
    10. vector:a quantity that is described by both magnitude and direction


     vocab week 1-4 
    1. acceleration due to gravity:acceleration of an object as a result of gravity
    2. deceleration:acceleration in the direction opposite to velocity; acceleration that results in a decrease in velocity
    3. elapsed time:the difference between the ending time and beginning time
    4. free-fall:the state of movement that results from gravitational force only
    5. instantaneous speed:magnitude of the instantaneous velocity
    6. position:the location of an object at a particular time
    7. scalar:a quantity that is described by magnitude, but not direction
    8. time:change, or the interval over which change occurs
    9. motion:displacement of an object as a function of time
    10. relativity:the study of how different observers moving relative to each other measure the same phenomenon
    vocab week 1-5 
    1. air resistance:a frictional force that slows the motion of objects as they travel through the air; when solving basic physics problems, air resistance is assumed to be zero
    2. analytical method:the method of determining the magnitude and direction of a resultant vector using the Pythagorean theorem and trigonometric identities
    3. classical relativity:the study of relative velocities in situations where speeds are less than about 1% of the speed of light—that is, less than 3000 km/s
    4. commutative:refers to the interchangeability of order in a function; vector addition is commutative because the order in which vectors are added together does not affect the final sum
    5. component (of a 2-d vector):a piece of a vector that points in either the vertical or the horizontal direction; every 2-d vector can be expressed as a sum of two vertical and horizontal vector components
    6. direction (of a vector):the orientation of a vector in space
    7. head (of a vector):the end point of a vector; the location of the tip of the vector's arrowhead; also referred to as the “tip”
    8. head-to-tail method:a method of adding vectors in which the tail of each vector is placed at the head of the previous vector
    9. magnitude (of a vector):the length or size of a vector; magnitude is a scalar quantity
    10. projectile:an object that travels through the air and experiences only acceleration due to gravity

    vocab week 1-6