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Motion > Questions > Flashcards

Questions Flashcards

1
Q

What is the symbol for average speed?

A

Vav

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2
Q

What is the symbol for change in?

A

Δ

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3
Q

What is the symbol for change in distance?

A

Δd

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4
Q

What is the symbol for initial distance?

A

d1

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5
Q

What is the symbol for final distance?

A

d2

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6
Q

What is the symbol for change in time?

A

Δt

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7
Q

What is the symbol for initial time?

A

t1

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8
Q

What is the symbol for final time?

A

t2

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9
Q

What are the equations for calculating speed, time, and distance?

A

v = d/t
t = d/v
d = vt

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10
Q

How do you convert m/s into km/h and vice versa?

A

m/s to km/h - multiply by 3.6
km/h to m/s - divide by 3.6

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11
Q

What’s the equation for calculating speed on a PT graph?

A

v = Δd/Δt
or
v = d2-d1/t2-t1

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12
Q

How do you calculate acceleration given speed and time?

A

a = v/t

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13
Q

How do you calculate acceleration with the refined formula?

A

Aav = v2-v1/Δt

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14
Q

How do you calculate time given acceleration and speed?

A

t = v2-v1/a

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15
Q

How do you calculate final speed given initial speed, acceleration and Δtime?

A

v2 = at + v1

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16
Q

How do you calculate initial speed given final speed, acceleration and Δtime?

A

v1 = v2 - at

17
Q

What is the relationship between slope and acceleration on a VT graph?

A
  • The slope on a line on a speed-time graph provides the acceleration
  • A positive slope represents positive acceleration (faster speed)
  • A negative slope represents negative acceleration (slowing down)
18
Q

How do you calculate average acceleration and distance travelled on a VT graph?

A

a = v/t
d (rectangular) = vt
d (triangular) = 1/2vt

19
Q

What is Newton’s first law of motion? Give 2 examples

A

The Law of Inertia
- Every object continues in a state of rest, or of motion in a straight line at constant speed, unless it is compelled to change that state by forces exerted upon it.

ex. When you shake the branches on a tree and the leaves fall off
A soccer ball will remain at rest until you kick it

20
Q

What is Newton’s second law of motion? Give 2 examples

A

Force and Acceleration
- The acceleration produced by a net force on an object is directly proportional to the magnitude of the net force

ex. The harder you kick a soccer ball, the faster and farther it will go
Pushing the pedals on your bicycle will cause it to go faster (accelerate)

21
Q

What is Newton’s Third Law of Motion? Give 2 Examples

A

Action and Reaction - To every action, there is an equal and opposite reaction
ex. Action: book pushes table; Reaction: Table pushes book
Action: bird flying and pushes air up; Reaction: Air pushes bird up

Motion (2 decks)

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