motion Flashcards

1
Q

what is speed

A

distance ina given time

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2
Q

what is velocity

A

displacement over a given time
or speed in a given direction

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3
Q

if an object moves ina straight line what graph can you show it

A

a distance time

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4
Q

what is the speed equaltion

A

distance = speed x time

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5
Q

if a car moves constantly in a circle..

A

speed is constant but velocity changes cosnantly

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6
Q

the gradient of a dt graph..

A

shows the speed

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7
Q

what should time be measured in

A

s

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8
Q

what is acceleration

A

change in velocity over a given time

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9
Q

acceleration equation

A

change in velocity (final- initial) = acceleration x time

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10
Q

what does the gradient of a vt graph show

A

the acceleration
so flat can still show movement

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11
Q

what does the area under a vt graph show

A

distance travelled

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12
Q

average running pace

A

3m/s

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13
Q

average swimming pace

A

2m/s

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14
Q

average cycle pace

A

6m/s

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15
Q

stupid accelleration equation for when you dont have time given

A

2as= v2 - u2

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16
Q

whats displacement

A

distance in a particular direction
shortest distance between start and end points

17
Q

what does braking do to the velocity and acceleration

A
  • decreases velocity ad decelerates