P1 Flashcards

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1
Q

What do you call measuring devices that are in continuous increments

A

analouge

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2
Q

What do you call measuring devices that are in specific increments

A

digital

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3
Q

best way to measure fast oscillations in short periods of time

A

To find average values of multiples of the actions.

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4
Q

Speed formula

A

Distance/time

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5
Q

What is instantaneous speed

A

measured in a short period of time, usually speed of a object in a window of time

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6
Q

What is average time

A

measured over a longer period of time that includes changes of speed.

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7
Q

What’s a scalar value

A

only includes size or magnitude

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8
Q

Examples of scalar values

A

time, mass, speed, and distance

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9
Q

What’s a vector value

A

includes size or magnitude and direction of travel

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10
Q
A
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11
Q

Accleration formula

A

(Current speed - previous speed)/Time taken

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12
Q

What does gradient of distance time graph mean

A

The steeper it is the faster the speed is

The more curved it is the speed is not constant and increasing

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13
Q

What does the gradient of a speed time graph tell you

A

The acceleration of it. If it’s horizontal to the x axis it’s moving a constant speed otherwise it’s accelerating or deaccelerating. Also if it touches and stays at the x aixs its stationary. If it’s curving this means there’s a inconsistent acceleration

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14
Q

How to find distance traveled in a speed time graph

A

Find the area under the gradient

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15
Q

What is a force

A

A push or pull from a object to another object

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16
Q

What are forces measured in

A

newtons

17
Q

How are forces measured

A

Force meter, or newton meter

18
Q

How do force affect things

A

They change sizes or direction of motion

19
Q

What are some examples of common forces

A

Air resistance, forward thrust, friction, buoyancy, tension, reaction force, weight, and gravity

20
Q

What does equilibrium mean

A

That the forces from opposite sides equal each other

21
Q

What is newtons 1st law

A

If there’s no resultant force on a object it will remain at rest or if it was already in motion at a constant velocity

22
Q

What is newtons 2nd law

A

A resultant force leads to acceleration leading to the formula f=ma

23
Q

How to find force equation

A

Force = Mass multiplied by acceleration

24
Q

What are objects that air resistnace normally neglect

A

Moving at low speeds, heaving, small, travelling short distances, or low densitiy mediums (space).

25
Q

What is the rate of free fall near Earth

A

9.8m/s

26
Q

What does sky divings speed time graph look like

A

Acceleration, terminal velocity at constant, immideite deaccleration and second terminal velocity.