Motion Flashcards

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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?

A

x axis

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?

A

Acceleration

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
Q

Time

A

The measurement of a period of time

26
Q

Gradient

A

Slope/Speed

27
Q

The formula for calculating speed is?

A

V: d/t

Average speed is equal to distance travelled divided by time taken

28
Q

SI unit for speed?

A

M/s

29
Q

Distance Triangle

A

Distance

Speed- time

30
Q

What is Newtons 2nd law?

A

F:MA

An object will accelerate in the direction of an unbalanced force acting on it.

31
Q

Difference between distance and displacement?

A

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
Q

Formula for force

A

F:Ma

Force is equal to mass times acceleration

33
Q

In a distance-time graph what does the line represent?

A

The steeper the gradient the faster the object.

34
Q

What is a distance time graph?

A

A graph that shows how the position of an object changes compared to where it started

35
Q

How is acceleration measured

A

m/s/s or m/s2

36
Q

How is velocity measured

A

M/s

37
Q

What is a displacement time graph?

A

A graph that shows how the position of an object changes compared to where it started.

38
Q

What is a velocity time graph?

A

A graph that shows the change in velocity over time. It is basically mapping acceleration.

39
Q

Difference between speed and velocity

A

Speed is the rate at which something travels while velocity is the rate at which displacement changes. Speed is scalar- velocity is vector.

40
Q

Area below speed time graph represent?

A

Distance travelled. Eg: 5 seconds at 2 m/s : 10m

41
Q

What does the area below a velocity time graph represent?

A

Displacement