Chapter 2

Question 1

rate of change in velocity; change in velocity overtime

Answer 1

acceleration

Question 2

acceleration of object due as a result of gravity

Answer 2

acceleration due to gravity

Question 3

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

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

Answer 7

Dependent variable

Question 8

Change in position of an object

Answer 8

Displacement

Question 9

Magnitude of displacement between two positions

Answer 9

Distance

Question 10

Total length of the path traveled between two positions

Answer 10

Distance traveled

Question 11

Difference between the ending time and beginning time

Answer 11

Elapsed time

Question 12

State of movement that results from gravitational force only

Answer 12

Free-fall

Question 13

Variable that the dependent variable is measured with respect to; usually plotted along the x-axis

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

Study of motion without considering its causes

Answer 17

Kinematics

Question 18

Location of an object at a particular time

Answer 18

Position

Question 19

Simplified description that contains only those elements necessary to describe the physics of a physical situation

Answer 19

Model

Question 20

Quantity that is described by magnitude, but not direction

Answer 20

Scalar

Question 21

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

Answer 21

Slope

Question 22

Change, or the interval over which change occurs

Answer 22

Time

Question 23

Quantity that is described by both magnitude and direction

Answer 23

Vector

Question 24

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

Answer 24

Y-intercept