Unit B: Section 1.0 Flashcards

1
Q

How can we tell if an object has moved?

A

We can analyze the motion of an object in comparison to another point

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2
Q

What is a reference point?

A

A point that we use to analyze the motion of an object

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3
Q

When does the motion of an object occur?

A

When an imaginary line attached to the reference point increases or decreases in distance or changes direction.

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4
Q

What is uniform motion?

A

When an object is traveling at constant rate of motion in a constant direction

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5
Q

What is average speed?

A

A uniform motion that involves traveling a distance in a specific time

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6
Q

What does the letter v mean in a mathematical formula?

A

Speed

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7
Q

What does a triangle mean before a letter in a chemical formula?

A

Difference in

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8
Q

What is the formula for average speed?

A

v = d/t or final distance - inital distance/ final distance - initial distance

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9
Q

What is the formula for slope?

A

Rise/run

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10
Q

Where does time go on a distance-time graph?

A

On the x-axis

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11
Q

Where does distance go on a distance-time graph?

A

The y-axis

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12
Q

What does a slope calculate in a distance-time graph?

A

Average speed

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13
Q

What does a straight line in a distance-time graph represent?

A

Uniform motion

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14
Q

What does a straight horizontal line on a speed-time graph represent?

A

As time goes the time goes on the speed remains constant

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15
Q

What does the slope of a speed-time graph confirm?

A

Whether or not the motion is uniform

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16
Q

How can you calculate the distance an object traveled on a speed-time graph?

A

By calculating the area underneath the graph

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17
Q

What is velocity?

A

The rate of motion and direction of an object

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18
Q

What is a scalar quantity?

A

A scalar quantity only represents the magnitude or how much and does not include direction

19
Q

What is a vector quality?

A

A vector quality includes the magnitude or how much and a direction

20
Q

How can you tell if something is a vector quality?

A

It will include an arrow overtop

21
Q

What is distanced traveled?

A

A scalar quantity that measures the distance traveled by an object from a reference point

22
Q

What is displacement?

A

a vector quantity the is a change in distance and direction from a reference point

23
Q

What is the formula for average velocity?

A

displacement / time elapsed or

final distance - initial distance / final time - initial time

24
Q

What does the slope represent on a position-time graph?

25
What goes on the x-axis on a position-time graph?
Time t (s)
26
What goes on the y-axis on a position-time graph?
Position d (m)
27
Is acceleration a vector or scalar quanitity?
Vector
28
What is acceleration?
Change in velocity in different specific time intervals
29
What are the 2 ways of positive acceleration?
- When an object has a positive magnitude of velocity and is increasing in a positive direction - When the change in velocity is negative and the direction is negative
30
What are 2 ways of negative acceleration?
- When the direction is negative and the change is velocity is positive - When the change in velocity is negative and the direction is positive
31
What is the formula for acceleration?
Acceleration = change in velocity/change in time
32
For acceleration, what will the best fit line look like?
A smooth curve
33
What will a positivley accelerating slope look like?
Will start from zero and look like half of a happy face
34
What will a negatively accelerating slope look like?
Start at 0 and look like half of a sad face
35
What will you figure out if you calculate the slope of a velocity-time graph?
The acceleration
36
What is a force?
A push or pull on an object
37
What is force measured in?
Newtons (N)
38
What happens in an unbalanced force?
The force acting in one direction greater than the force in the opposite direction
39
What is work?
When energy is applied to an object and it moves a distance
40
What is the formula for work?
Work = force x distance
41
What is work measured in?
Joules
42
What is 1 joule equal to?
(1kg x m/s²) x m
43
What are the 3 conditions for work to be done on an object?
- Must be movement - There must be a force - The force and distance must be in the same direction
44
What should be equal to work output?
Work input if there is the absense of friction