Conceptual Physics: Ch4 Physics Test Study Guide Flashcards


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Conceptual Physics
Chapter 4
vocab and needed knowledge
updated 5 weeks ago by camryn190
Subjects:
physics, science
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1

What is measured in m/s?

Speed, Velocity

2

What is measured in m/s^2?

Acceleration

3

What can be measured in meters (m)?

Distance, Displacement

4

What is distance?

How far you have traveled. How many steps you have gone. Direction not needed. (fitness)

5

What is displacement?

How far you are from your starting point. Include direction

6

Displacement symbol-

Delta X (triangle X)

7

Displacement unit-

meters (m)

8

Distance unit-

meters (m)

9

Scalar-

Does not include direction, only size

10

Vectors-

Include direction and magnitude (how much)

11

Average speed=

Distance/Time

12

Average velocity=

Displacement/Time

13

What is Average speed and Average Veloctiy measured in?

m/s

14

Average=

How fast you are going on Average

15

Instanteous=

How fast you are going in the moment

16

In a postion v. time graph, what does the slope tell you?

Average Velocity

17

What does the rise/run = in a p v. t graph?

Delta X/T (Displacement/Time in Secs)

18

What is the postion symbol?

X

19

What is position measured in?

meters (m)

20

What does it mean when the slope is zero?

Horizontal Line, Stopped

21

What is acceleration?

Change in velocity over time

22

3 ways to accelerate?

1. Change in direction

2. Speed up (start moving)

3. Slow down (stop moving)

23

How can a falling object speed up?

By falling for longer

24

How do you slow down an object in motion?

Push in opposite direction of motion

25

How do you make a moving object go faster?

Push in direction on current motion

26

What is acceleration measured in?

m/s^2

27

What is the acceleration of falling objects on earth?

-10 m/s^2

28

Name the vectors-

Displacement, Velocity, Acceleration

29

Name the Scalars-

Speed, Direction

30

What does the slope represent in a p v. t graph?

Velocity

31

What does the sign of the slope mean in a p v. t graph?

direction

32

What does the y-intercept of a p v. t graph represent?

Starting postion

33

What does the steepness of a slope mean in a p v. t graph?

Speed

34

What does the slope represent in a velocity v. time graph?

Acceleration

35

What does the y-intercept represent in a v v. t graph?

Starting velocity

36

When is the velocity of a object thrown upward zero?

At the highest point

37

When the sign of velocity = + and the sign of accleration = +, is it speeding up or slowing down?

Speeding Up

38

When the signs of velocity and accleration are different, is the object speeding up or slowing down?

Slowing Down

39

Sign for average velocity

Vavg

40

What is average velocity measured in?

M/s

41

Initial Velocity Sign

VI

42

Initial velocity unit

m/s

43

Final Velocity Sign

VF

44

Final Velocity unit?

m/s

45

Acceleration Sign

A

46

Dropped objects started with a velocity of...

zero

47

Thrown objects start with a velocity of...

not zero