Motion Flashcards

(41 cards)

1
Q

Speed

A

The rate at which something moves

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2
Q

Acceleration

A

Increase in the speed of movement

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3
Q

Deceleration

A

Decrease in the speed of movement

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4
Q

Displacement

A

How far out of place an object is from its starting position (a straight line)

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5
Q

Distance

A

Total length or route that was taken from start to end.

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6
Q

Velocity

A

Rate of movement over displacement

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7
Q

Instantaneous Speed

A

Speed at any particular instance/random

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8
Q

Average speed

A

All of the speeds added up and then divided by time.

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9
Q

Distance is a

A

Scalar quantity

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10
Q

Displacement is a

A

Vector quantity

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11
Q

Scalar Quantity

A

It has size but not direction

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12
Q

Vector quantity

A

It has both size and direction

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13
Q

Average speed is calculated by

A

distance divided by time travelled

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14
Q

To find distance

A

Velocity x time
or
Speed x time

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15
Q

To find speed

A

distance divided by time

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16
Q

To find time

A

distance divided by speed

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17
Q

To go from km/h to m/s

A

divide by 3.6

18
Q

To go from m/s to km/hr

A

multiply by 3.6

19
Q

Where is time situated on the line?

20
Q

What does the slope of a distance/time graph tell us?

A

About the speed

21
Q

How can you calculate the speed of a distance time graph?

A

Slope = rise over run

22
Q

What does the slope or gradient tell is about for a speed time graph?

23
Q

How to find acceleration?

A

rise over run = Vf - Vi
———-
time taken

24
Q

How to find the distance travelled on a speed/time or velocity/time graph?

A

The area under neath the line of the graph

25
Time
The measurement of a period of time
26
Gradient
Slope/Speed
27
The formula for calculating speed is?
V: d/t | Average speed is equal to distance travelled divided by time taken
28
SI unit for speed?
M/s
29
Distance Triangle
Distance | Speed- time
30
What is Newtons 2nd law?
F:MA | An object will accelerate in the direction of an unbalanced force acting on it.
31
Difference between distance and displacement?
Displacement is how far an a object travels from its point of origin, and distance is the measurement of the path taken. Distance is scalar displacement is vector
32
Formula for force
F:Ma | Force is equal to mass times acceleration
33
In a distance-time graph what does the line represent?
The steeper the gradient the faster the object.
34
What is a distance time graph?
A graph that shows how the position of an object changes compared to where it started
35
How is acceleration measured
m/s/s or m/s2
36
How is velocity measured
M/s
37
What is a displacement time graph?
A graph that shows how the position of an object changes compared to where it started.
38
What is a velocity time graph?
A graph that shows the change in velocity over time. It is basically mapping acceleration.
39
Difference between speed and velocity
Speed is the rate at which something travels while velocity is the rate at which displacement changes. Speed is scalar- velocity is vector.
40
Area below speed time graph represent?
Distance travelled. Eg: 5 seconds at 2 m/s : 10m
41
What does the area below a velocity time graph represent?
Displacement