Chapter4️⃣

Question 1

What is the modern study of motion?

Answer 1

Mechanics

Question 2

Name the three parts of mechanics.

Answer 2

Kinematics
Dynamics
Statics

Question 3

Everything inside the boundaries of what we are studying is known as what?

Answer 3

System

Question 4

What group of ppl studied the physical world?

Answer 4

Greeks

Question 5

Everything outside of the boundaries is called what?

Answer 5

The systems surroundings

Question 6

What do we need to anchor our observations

Answer 6

Landmarks or points of reference

Question 7

The space containing that point is known as what?

Answer 7

Frame of reference

Question 8

What is a fixed frame of reference?

Answer 8

In which the system of interest moves

Question 9

What is an accelerated frame of reference?

Answer 9

A frame of reference that accelerates along what we are trying to study

Question 10

What does a rotational reference frame help?

Answer 10

Study a system that revolves

Question 11

What is a imaginary line marked off in distance units?

Answer 11

Coordinate axis

Question 12

A what must occur with in a span of time?

Answer 12

Phenomenon

Question 13

A what is represented by the symbol /_\t and calculated by subtracting the initial time from the final time.

Answer 13

Time interval

Question 14

What is any measurable quantity that can be completely described with a single piece of information ?

Answer 14

Scalar quantity

Question 15

A _ is a measurable quantity that has both scalar value and a direction associated with it.

Answer 15

Vector

Question 16

_ are assigned a direction relative to the coordinate axis in the observers frame of refrence.

Answer 16

Vectors

Question 17

The direction of the _ relative to the coordinate axis determines wether the _ has a positive or negative scalar value.

Answer 17

Vector

Question 18

What does kinematics measure?

Answer 18

Positions, speed or velocity, and acceleration of an object

Question 19

When does motion occur?

Answer 19

When a system’s position changes during an interval of time

Question 20

(What demention) only a single position coordinate is needed to identify a systems position.

Answer 20

1D motion (x)

Question 21

What is a positive scalar quantity because there is no direction associated with it?

Answer 21

Distance (d)

Question 22

What is the change of position, which includes direction?

Answer 22

Displacement (Bold letter)

Question 23

What is the magnitude of a number vector is its absolute value and is always positive?

Answer 23

Magnitude

Question 24

The _ of a displacement vector and the distance traveled and equal only when the object has traveled a straight line in one direction between the beginning and ending points

Answer 24

Magnitude

Question 25

How fast the motion occurs is the quantity of what?

Answer 25

Speed

Question 26

The speed of a system is simply what?

Answer 26

Rate of motion

Question 27

The total distance divided by the total time give the system's what?

Answer 27

Average speed

Question 28

In contrast to speed, _ is the rate of displacement.

Answer 28

Velocity

Question 29

_ is the rate of change in the speed or velocity during a given interval of time.

Answer 29

Acceleration

Question 30

Motion in _ dine tons involves a change of position on a cordinant plane.

Answer 30

2

Question 31

_ demention motion occurs in all 3 spatial dimensions (length width and height)

Answer 31

3

Question 32

What is one of the oldest sciences?

Answer 32

Mechanics

Question 33

What is the study of movement?

Answer 33

Physics

Question 34

What were Greeks called

Answer 34

Natural philosophers