Motion (Topic 1) Flashcards

1
Q

How to calculate speed

A

Distance divided by time

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2
Q

How to calculate distance

A

Speed X time

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3
Q

How to calculate Time

A

Distance divided by speed

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4
Q

How many metres in a kilometre
How many seconds in a minute

A

1000M
60 sec

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5
Q

What are the units of speed

A

m/s

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6
Q

What are the different types of motions graphs

A

No movement- stationary
Constant movement- steady spread
Acceleration

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7
Q

How to find the load?

A

3 X effort

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8
Q

What two things can a gear system change?

A

Speed and direction

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9
Q

What type of gears meet at an angle?

A

Bevel

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10
Q

What type of gear uses a screw?

A

Warm

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11
Q

How to find average speed or velocity

A

Initial speed (u) + final speed (v)

2

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12
Q

What does the gradient of a distance - time graph give you?

A

The speed

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13
Q

How to find the rate change of speed (acceleration or deceleration) in a speed - time graph?

A

U - V divided by time or the gradient of the graph (if there is one)

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14
Q

How to find the distance from a speed - time graph?

A

Area under the graph

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15
Q

What is a scalar? (Physical measurement)

A

These have only size and magnitude e.g. distance, speed, energy, time

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16
Q

What is a vector? (Physical measurement)

A

These have both magnitude and direction e.g. force, moment, velocity, displacement

17
Q

Displacement definition

A

It is the distance moved from a fixed point in a particular direction

18
Q

Velocity definition and how to work it out?

A

It is the rate of change of displacement with time.
Velocity = displacement divided by time

19
Q

What does the gradient of a displacement - time graph give you?

A

The velocity

20
Q

What does the gradient of a velocity - time graph give you?

A

The acceleration

21
Q

How to get the displacement of a velocity - time graph?

A

Area under the graph