midterm Flashcards

(35 cards)

1
Q

Definition of Motion

A

the change of a position of an object with respect to time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

In order to describe motion you must specifify parameters such as

A

Displacement and Time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Definition of Vectors

A

Parameters that have a numerical value in a specific direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Definition of Scalar

A

Parameters that have numerical values but no direction’s needed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Definition of Speed/Rate

A

A scalar quantity that measures the distance traveled over the change in time

Rate of motion or how fast something’s going

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Symbol for Speed/Rate

A

V or r (sometimes)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Equation for Speed/Rate

A

V= d/t

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Unit for speed/rate

A

m/s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Definition of Velocity

A

A vector quantity that measures displacement over the change in time

Tells speed and direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Symbol for Velocity

A

V (same as speed/rate)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Equation for velocity

A

V= d/t (same as speed/rate)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Unit for Velocity

A

m/s in any given direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Definition of Acceleration

A

The rate of change in speed with time

The rate at which an object changed its velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Symbol for Acceleration

A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Equation for acceleration

A

a = Vf- Vi / t

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Unit for acceleration

17
Q

Definition of force

A

A vector quantity defined as a push or pull on an object

18
Q

Symbol for force

19
Q

Unit for force

A

N (Newton) and 1N = 1kg m/s squared

20
Q

Equation for force

21
Q

Definition of gravity

A

earth’s surrounded by its own gravitational field which exerts a constant force on all objects towards it (attractive)

22
Q

Law of acceleration of gravity

A

An object free-falling near the earths surface increases its velocity at a rate of 9.8 m/s for each second of its descent

23
Q

Symbol for law of acceleration of gravity

24
Q

Equation for law of acceleration of gravity

A

g = 9.8 m/s squared

25
Definition for Velocity of a free-falling object
Free-falling objects are in a state of acceleration at a rate of 9.8 m/s squared Its velocity is dependent upon the time its fallen
26
The distance of a free-falling object is dependent upon...
the time it has fallen
27
Formula for Distance covered by a free-falling object
d = .5 * g * t squared
28
Definition of work
A force applied to an object causing its motion (displacement) Must be a displacement of the object caused by force to be qualified as work
29
Symbol for work
W
30
Equation for work
W = f * d
31
Unit for work
N*m = Joule (j)
32
Definition for Energy
The ability to do work
33
Definition for power
The rate at which work is done Time it takes to do the work
34
Symbol for power
P
35
Equation for power
P = w/t