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Physics - Motion Flashcards

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1
Q

L1 - Distance and Displacement (7.1)

Define a Scalar quantity

A

A scalar quantity refers to a quantity that requires a magnitude (size) and unit.

NO DIRECTION

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2
Q

L1 - Distance and Displacement (7.1)

Define a Vector quantity

A

A Vector quantity refers to quantities that** require a magnitude (size), unit and direction**

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3
Q

L1 - Distance and Displacement (7.1)

Define Distance

A

Distance refers to how far an object travels over a certain period of time.

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4
Q

L1 - Distance and Displacement (7.1)

What is the symbol for Distance?

A

Distance = (d) m

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5
Q

L1 - Distance and Displacement (7.1)

Is Distance Scalar or Vector?

A

Distance is a scalar quantity as it requires only a magnitude (size) and unit.

does not need a direction

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6
Q

L1 - Distance and Displacement (7.1)

Define Displacement

A

Displacement refers to an objects change in position and direction (measured from start to end).

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7
Q

L1 - Distance and Displacement (7.1)

What is the symbol for Displacement?

A

Displacement = (s) m

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8
Q

L1 - Distance and Displacement (7.1)

Is Displacement scalar or vector?

A

Displacement is a vector quantity as it requires not only a magnitude (size) and unit but also a direction..

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9
Q

L1 - Distance and Displacement (7.1)

What is the formula for Displacement?

A

Displacement = Final Position (FINISH) - Initial Position (START)

s = ⃤(triangle) x

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10
Q

L1 - Distance and Displacement (7.1)

Recall Pythagoras Theorum

A

c² = a² + b²
OR
a² = c² - b²

Used mainly to determin displacements

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11
Q

L1 - Distance and Displacement (7.1)

Recall sin, cos, tan

A
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12
Q

L2 - Interpreting Position-Time Graphs (7.1(2))

Define position

A

Position refers to the location of an object with respect to a defined origin

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13
Q

L2 - Interpreting Position-Time Graphs (7.1(2))

What is the symbol for position?

A

Position = (x) m

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14
Q

L2 - Interpreting Position-Time Graphs (7.1(2))

Is position scalar or vector?

A

Position is a vector quantity as it requires not only a magnitude (size) and unit but also a direction..

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15
Q

L2 - Interpreting Position-Time Graphs (7.1(2))

Identify the IDV and DV of a Position-Time Graph

ELABORTAE ON DIFF FACTORS

A

Independant Variable = Time (x-axis) - refers to the varibale being changed
Dependant Variable = Position (x) (y-axis) - refers to the variable being measured

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16
Q

L2 - Interpreting Position-Time Graphs (7.1(2))

What does a Positive Gradient (m) indicate?

Position-Time Graphs

A

A positive gradient (m) indicates an object is moving away from the origin point

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17
Q

L2 - Interpreting Position-Time Graphs (7.1(2))

What does a Negative Gradient (m) indicate?

Position-Time Graphs

A

A negative gradient (m) indicates an object is moving towards the origin point

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18
Q

L2 - Interpreting Position-Time Graphs (7.1(2))

What does a horizontal gradient (m) indicate?

Position-Time Graphs

A

A horizontal gradient (m) indicates that an object is at rest, as time increase the position remains the same hence a gradient of 0.

19
Q

L2 - Interpreting Position-Time Graphs (7.1(2))

What 2 factors are used to analyse Position-Time Graphs?

A

The 2 factors use to analyse Position-Time graphs are position (x) and displacement (s).

20
Q

L2 - Interpreting Position-Time Graphs (7.1(2))

Define the Point of Refrence (POR)

A

The point of refrence refers to a fixed position used to define the position of an object in space, serving as a basline/origin from which measure position, distance and displacement.

objects don’t always have to start at the origin point, all abt POR

21
Q

L3 - Distance-Time Graphs - stile 1.1 SIMULATING DISTANCE TIME AND SPEED

Define Accelerating

A

refers to an increase of speed

22
Q

L3 - Distance-Time Graphs - stile 1.1 SIMULATING DISTANCE TIME AND SPEED

Define Decelerating

A

refers to a decrease of speed

23
Q

L3 - Distance-Time Graphs - stile 1.1 SIMULATING DISTANCE TIME AND SPEED

Recall the formula for Speed

(Average Speed)

A

speed = distance travelled/ time taken

s = d/t

24
Q

L3 - Distance-Time Graphs - stile 1.1 SIMULATING DISTANCE TIME AND SPEED

Recall the values of the:
* y-axis
* x-axis
* gradient (m)

of Distance-Time Graphs

A
  • y-axis = distance (d)
  • x-axis = time (t)
  • gradient (m) = speed (s)
25
Q

L3 - Distance-Time Graphs - stile 1.1 SIMULATING DISTANCE TIME AND SPEED

What does a strong positive gradient indicate?

Distance-Time Graphs

A

A strong positive gradient (m) indicates a greater speed

26
Q

L3 - Distance-Time Graphs - stile 1.1 SIMULATING DISTANCE TIME AND SPEED

What does a weak positive gradient indicate?

Distance-Time Graphs

A

A weak positive gradient (m) indicates a constant speed

27
Q

L3 - Distance-Time Graphs - stile 1.1 SIMULATING DISTANCE TIME AND SPEED

What does a horizontal Gradient (m) indicate?

Distance-Time Graphs

A

A horizontal Gradient (m) indicates the object isn’t chnaging it’s position over time (object is stationary)

28
Q

L3 - Distance-Time Graphs - stile 1.1 SIMULATING DISTANCE TIME AND SPEED

Define Constant Speed

A

refers to distance-time graphs showing a straight line with a constant slope

29
Q

L3 - Distance-Time Graphs - stile 1.1 SIMULATING DISTANCE TIME AND SPEED

Define Variable Speed

A

refers to distance-time graphs showing varying speeds. (peacks/slopes/curves)

30
Q

L3 - Distance-Time Graphs - stile 1.1 SIMULATING DISTANCE TIME AND SPEED

Recall the axis of a speed graph sperate to a distance graph

A

speed
* x-axis = time
* y-axis = speed

Distance
* x-axis = time
* y-axis = distance

31
Q

L3 - Distance-Time Graphs - stile 1.2 TIME, DISTANCE AND SPEED

Define forces

A

Forces refer to things changing shape, directionand speed due to an application of a force (pushing)

You cannot see forces only the application

E.G., hands (application) pushing something, you can’t see force applied only the application

32
Q

L3 - Distance-Time Graphs - stile 1.2 TIME, DISTANCE AND SPEED

Define Kinematics

A

Kinematics refer to the description of motion without considering the forces that cause or effect this motion.

based on geometric aspects motion - position, velocity, acceleration

Velocity = rate of change in displacement w/ respect to time

33
Q

L3 - Distance-Time Graphs - stile 1.3 AVERAGE SPEED

Define Average Speed

worded answer

A

Average Speed refers to the total distance travelled divided by the total time taken to travel the distance.

s = d/t

34
Q

L3 - Distance-Time Graphs - stile 1.3 AVERAGE SPEED

Is Average Speed Scalar or Vector?

A

Average speed is a scalar quantity as it doesn’t require a direction

35
Q

L3 - Distance-Time Graphs - stile 1.3 AVERAGE SPEED

Define Average Speed over different periods

A

Average speed over differnet periods refers to the measure of how fast an object travels over a specific time interval.

36
Q

L3 - Distance-Time Graphs - stile 1.3 AVERAGE SPEED

How is the Average speed over different periods found?

A

It is found by determining the slope of a line between 2 connecting points

37
Q

L3 - Distance-Time Graphs - stile 1.3 AVERAGE SPEED

What is the formular for the Average speed over different periods

A

sav = d2 - d1/t2 - t1

38
Q

L3 - Distance-Time Graphs - stile 1.3 AVERAGE SPEED

Define Instantaneous speed

A

Instantaneous speed refers to the speed of an object at a particular moment in time,refelecting variations of speed

39
Q

L3 - Distance-Time Graphs - stile 1.3 AVERAGE SPEED

Is Instantaneous speed scalar or Vector?

A

Instantaneous speed is a scalar quantity as it dosn’t require a direction

40
Q

L3 - Distance-Time Graphs - stile 1.4 TRANSPOSING THE SPEED EQUATION

what is the formular for average speed (s/sav)?

A

sav = d/t

41
Q

L3 - Distance-Time Graphs - stile 1.3 AVERAGE SPEED

what is the formular for distance (d)?

A

d = s x t

42
Q

L3 - Distance-Time Graphs - stile 1.3 AVERAGE SPEED

what is the formular for time (t)?

A

t = d/s

43
Q

L3 - Distance-Time Graphs - stile 1.3 AVERAGE SPEED

Recall the triangle trick

A

triangle split in 3 - top = d left = s and R = t
cover unknown value and infer the equation

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