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med 101- physics i > 2. KINEMATICS > Flashcards

2. KINEMATICS Flashcards

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1
Q
  1. Is anything in this world truly and utterly stationary?
A
  • no
  • everything, even seemingly stationary things, all move with the Earth’s rotation
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2
Q
  1. What is the definition of kinematics?
A
  • the classification and comparison of motions
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3
Q
  1. What is the position of an object?
A
  • it is where the object is situated in relation to some reference point (often the origin)
  • this helps to find the location of an object
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4
Q
  1. What is the origin?
A
  • it is the zero point of an axis
  • this is where x=0 and y=0
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5
Q
  1. What is the relation of the x and y axises to each other?
A
  • they are always perpendicular to each other
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6
Q
  1. What kind of co-ordinate do objects positioned to the right of the origin (0;0) have?
A
  • they have a positive x co-ordinate
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7
Q
  1. What kind of co-ordinate do objects positioned to the left of the origin (0;0) have?
A
  • they have a negative x co-ordinate
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8
Q
  1. What kind of co-ordinate do objects above the origin (0;0) have?
A
  • they have a positive y co-ordinate
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9
Q
  1. What kind of co-ordinate do objects below the origin (0;0) have?
A
  • they have a negative y co-ordinate
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10
Q
  1. What is the definition of distance?
A
  • it is the length of the path travelled by the object from one place to another
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11
Q
  1. Is distance a vector or a scalar quantity?
A
  • it is a scalar quantity
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12
Q
  1. What does scalar quantity mean?
A
  • it only has a magnitude (value)
  • there is no direction
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13
Q
  1. Provide a definition for displacement?
A
  • it is the distance travelled, with an associated direction
  • it is the change in the object’s position
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14
Q
  1. What is the equation of displacement?
A
  • Displacement= change in position
  • Change in position= Final Position- Initial position
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15
Q
  1. Is displacement a vector or a scalar quantity?
A
  • it is a vector quantity
  • it has a magnitude and direction
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16
Q
  1. What happens if an object moves from x1=5m to x2=200, and then back to x1=5m?
A
  • the displacement from start to finish is zero
17
Q
  1. What is the definition of velocity?
A
  • it is the rate of change of displacement
  • it is the speed of an object in a given direction
18
Q
  1. How is average velocity worked out?
A
  • it is the change in displacement divided by the change in time
19
Q
  1. What is the unit for average velocity?
A
  • it is metres per second
  • m/s
20
Q
  1. is velocity a vector or a scalar quantity?
A
  • it is a vector quantity
  • it signifies both the magnitude of how fast an object is moving and in which direction it is going
21
Q
  1. What is the definition of average speed?
A
  • it is the rate of change of distance
  • it is how fast the particles move
  • it involves the total distance covered
  • average speed is independent of the direction
22
Q

22.Is average speed a vector or a scalar quantity?

A
  • it is a scalar quantity
23
Q
  1. What is the basic definition of acceleration?
A
  • an object that has a changing velocity is said to be accelerating
24
Q
  1. What is a more specific definition of acceleration?
A
  • it is the rate of change of velocity
  • how rapidly the velocity of an object changes
25
Q
  1. Is Acceleration a vector or a scalar quantity?
A
  • it is a vector quantity
  • it has magnitude and direction
26
Q
  1. What is the definition of Average Acceleration?
A
  • it is defined as the change in velocity divided by the change in time
27
Q
  1. What is the unit of acceleration?
A
  • meters per second squared
  • m/s2
28
Q
  1. What do all objects falling freely towards Earth have?
A
  • they have the same acceleration
29
Q
  1. What is the direction and the value of constant gravitational acceleration?
A
  • it acts downwards
  • g=9.81m/s2
30
Q
  1. What is the full name of g?
A
  • acceleration due to gravity
31
Q
  1. Why does a feather drop to the ground so much slower than a rock if both have the same gravitational acceleration?
A
  • due to the air resistance on the feather
32
Q
A
  • A
33
Q

Read through this summary.
Does it make sense?

A
  • yes
34
Q

Read through this summary.
Does it make sense?

A
  • yes

med 101- physics i (28 decks)

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