Ch 1-3

Question 1

Accuracy

Answer 1

Deals with operator error

Question 2

Precision

Answer 2

Deals with the quality of the measuring device

Question 3

Parallax

Answer 3

Error caused by making a measurement from too far to one side

Question 4

Significant figures

Answer 4

Those digits in a measurement that are known with certainty, plus on (uncertain)

Question 5

Dimensional analysis

Answer 5

Converting measurements to different units

Question 6

Gram of reference

Answer 6

Something to compare to when describing motion

Question 7

One-dimensional motion

Answer 7

Can move forward or backward ONLY

Question 8

Displacement

Answer 8

The distance and direction between starting point and ending point

Question 9

Average velocity

Answer 9

The displacement divided by the time interval

Question 10

Velocity

Answer 10

Speed plus direction

Question 11

Slope

Answer 11

Rise divided by run

Question 12

Instantaneous velocity

Answer 12

The velocity of an object at some instant (or specific point in its path)

Question 13

Acceleration

Answer 13

The rate of change of velocity

Question 14

Deceleration

Answer 14

A special acceleration, while slowing down

Question 15

Free fall

Answer 15

Motion of an object falling with a constant acceleration

Question 16

Acceleration due to gravity

Answer 16

-9.81 m/s2

Question 17

Scalar

Answer 17

A physical quantity that has only a magnitude but no direction

Question 18

Vector

Answer 18

A physical quantity that has both magnitude, but no direction

Question 19

Resultant

Answer 19

A vector representing the sum of two or more vectors

Question 20

Triangle method of addition

Answer 20

Determining resultant by drawing a vector from the first tail to the last head of vectors

Question 21

Tangent

Answer 21

Opposite/adjacent

Question 22

Sine

Answer 22

Opposite/adjacent

Question 23

Cosine

Answer 23

Adjacent/hypotenuse