TERMINOLOGIES

Question 1

acceleration of an object as a result of gravity

Answer 1

acceleration due to gravity

Question 2

the rate of change in velocity; the change in velocity over time

Answer 2

acceleration

Question 3

the change in velocity divided by the time over which it changes

Answer 3

average acceleration

Question 4

distance traveled divided by time during which motion occurs

Answer 4

average speed

Question 5

displacement divided by time over which displacement occurs

Answer 5

average velocity

Question 6

acceleration in the direction opposite to velocity; acceleration that results in a
decrease in velocity

Answer 6

deceleration

Question 7

the variable that is being measured; usually plotted along the y -axis

Answer 7

dependent variable

Question 8

the change in position of an object

Answer 8

displacement

Question 9

the total length of the path traveled between two positions

Answer 9

distance traveled

Question 10

the magnitude of displacement between two positions

Answer 10

distance

Question 11

the difference between the ending time and beginning time

Answer 11

elapsed time

Question 12

the state of movement that results from gravitational force only

Answer 12

free-fall

Question 13

the state of movement that results from gravitational force only

Answer 13

independent variable

Question 14

acceleration at a specific point in time

Answer 14

instantaneous acceleration

Question 15

magnitude of the instantaneous velocity

Answer 15

instantaneous speed

Question 16

velocity at a specific instant, or the average velocity over an infinitesimal time interval

Answer 16

instantaneous velocity

Question 17

the study of motion without considering its causes

Answer 17

kinematics

Question 18

the location of an object at a particular time

Answer 18

position

Question 19

a quantity that is described by magnitude, but not direction

Answer 19

scalar

Question 20

the difference in y -value (the rise) divided by the difference in x -value (the run) of two
points on a straight line

Answer 20

slope

Question 21

change, or the interval over which change occurs

Answer 21

time

Question 22

a quantity that is described by both magnitude and direction

Answer 22

vector

Question 23

the y- value when x = 0, or when the graph crosses the y -axis

Answer 23

y-intercept

Question 24

• refers to the velocity of an object as observed from a different reference frame

Answer 24

Relative Velocities

Question 25

amount of work required to accelerate a body of from rest to velocity mass -consequence of being in motion

Answer 25

Kinetic Energy

Question 26

amount of work required to accelerate a body of from rest to velocity mass -consequence of being in motion

Answer 26

Kinetic Energy

Question 27

energy stored in the system in come fashion, once it released, It can do work

Answer 27

Potential Energy

Question 28

energy of an object by virtue of it's height of elevation above a reference point

Answer 28

Gravitational Potential Energy

Question 29

energy stored in an avises due to the objects ability to return to its orginal shape

Answer 29

Elastic Potential Energy

Question 30

-the force is independent of path -the force over a closed path is zero

Answer 30

Conservative Forces

Question 31

change of energy with time

Answer 31

Power

Question 32

balance point of a body

Answer 32

Center of Mass

Question 33

-describes the motion of an object -product of an object's mass and velocity

Answer 33

Momentum

Question 34

-in a closed system the total momentum is constant. -momentum is a conserved vector quantity

Answer 34

Conservation of Momentum

Question 35

area under the force vs. time force

Answer 35

Impulse

Question 36

-two bodies briefly come into direct contact with each other. •Perfectly elastic collision none of the Ik is converted into heat or deformation •Perfectly inelastic all 1k is converted into heat and deformation

Question 37

collision lie between there two extremes

Answer 37

Inelastic Collision

Question 38

measures how elastic a collision

Answer 38

Coefficient of Restitution