Physics

Question 1

What is physics?

Answer 1

The study of matter and energy and how they interact.

Question 2

What are the two branches of mechanics?

Answer 2

Dynamics
Kinematics

Question 3

What is kinematics?

Answer 3

A study of how things move

Question 4

What is dynamics?

Answer 4

A study of why things move

Question 5

What is motion?

Answer 5

A change in the position of an object in relation to a stationary point

Question 6

What is a frame of reference?

Answer 6

The stationary point being used to describe motion

Question 7

What are scalar quantities?

Answer 7

Quantities/measurements that have only magnitude and no direction

Question 8

What are vector quantities?

Answer 8

Quantities/measurements with both magnitude and direction

Question 9

What are positive directions?

Answer 9

Right
North
East
Up

Question 10

What are negative directions?

Answer 10

Down
Left
South
West

Question 11

What are example of scalar quantities?

Answer 11

Distance
Speed
Time

Question 12

What are examples of vector quantities?

Answer 12

Displacement
Position
Velocity

Question 13

What is distance?

Answer 13

The total movement of an object regardless of direction

Question 14

What is displacement?

Answer 14

The change in position of an object

Question 15

What is the displacement formula?

Answer 15

Displacement= final position-initial position

Question 16

What is the symbol for change?

Answer 16

Delta (the triangle)

Question 17

What is the symbol for position?

Answer 17

>

Question 18

What is uniform motion?

Answer 18

When motion is at a constant speed or steady velocity AKA covering the same distance each time interval

Question 19

What is a D-t graph?

Answer 19

A distance time graph is a change showing how distance is changing over time

Question 20

On a d-t graph what does the slope represent?

Answer 20

The speed of the object

Question 21

What does a straight sloped line show?

Answer 21

Uniform motion

Question 22

What is the slope of an object at rest?

Answer 22

0

Question 23

Why do distance-time graphs only ever go up?

Answer 23

Because distance (how much total motion) can only ever increase

Question 24

What are position-time graphs?

Answer 24

Graphs that show how an object position is changing

Question 25

On a position-time graph what does the slope show?

Answer 25

Velocity

Question 26

What does a positive slope on a position-time graph indicate?

Answer 26

The object is moving to the right

Question 27

What does a negative slope on a position-time graph indicate?

Answer 27

The object is moving left

Question 28

What do curved lines show?

Answer 28

The slope is changing.

Question 29

What is the sig-fig rule regarding non-zero numbers?

Answer 29

All non-zero numbers are always significant

Question 30

When is zero considered a significant digit?

Answer 30

When zero is between two significant digits or is the last number after a decimal

Question 31

When is zero NOT considered significant?

Answer 31

When zero is between a significant number and a decimal (no significant number before/after decimal)

Question 32

What is the sig-fig rule for rounding when adding and subtracting?

Answer 32

When adding or subtracting always round to the same number of decimals as the least precise number in the question/number with the least amount of decimal numbers.

Question 33

What is the sig-fig rule for division and multiplication?

Answer 33

Always round to the same number of significant digits as the number with the least amount of significant digits in the question

Question 34

What is acceleration due to gravity?

Answer 34

9.81m/s2

Question 35

What is formula used for uniform motion questions?

Answer 35

d v t

Question 36

What is acceleration?

Answer 36

The rate of change of velocity or how quickly velocity is changing

Question 37

What is the formula used for non-uniform motion?

Answer 37

V (Vf-Vi) a t

Question 38

What is positive acceleration?

Answer 38

Speeding up

Question 39

What is negative acceleration?

Answer 39

Slowing down

Question 40

What is Newton’s first law?

Answer 40

An object will stay at rest/motion until a force acts on it

Question 41

What is inertia?

Answer 41

A resistance to change state of motion

Question 42

What is newtons 2nd law?

Answer 42

An objects acceleration depends on a its mass and the force applies to it

Question 43

What is the formula used for force?

Answer 43

F m a

Question 44

What unit is force measured in?

Answer 44

Newtons (N) aka kg•m/s2

Question 45

What is Newton’s third law of motion?

Answer 45

For every action there is an equal and opposite reaction

Question 46

Momentum makes an object difficult to___

Answer 46

Stop

Question 47

What has momentum?

Answer 47

Objects in motion

Question 48

What must the momentum be for a object to be at rest?

Answer 48

0

Question 49

What is the formula for momentum?

Answer 49

P(momentum)=mxv(velocity)

Question 50

What unit is momentum and impulse measured in?

Answer 50

kg•m/s

Question 51

What does impulse do?

Answer 51

It changes momentum

Question 52

What is impulse?

Answer 52

The amount of force and time during which force in applied

Question 53

What is the formula for impulse?

Answer 53

I=Fxt