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Biomechanics > Linear Kinematics 2 > Flashcards

Linear Kinematics 2 Flashcards

1
Q

What is the term for the quantity that only has a magnitude and no relation to direction?

A

Scalar quantity

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2
Q

What is vector quantity?

A

a quantity that has a magnitude and direction

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3
Q

What is the term to describe has fast something is moving in a particular direction?

A

Velocity (V)

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4
Q

What is acceleration?

A

how rapidly something is changing velocity

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5
Q

what is meant by the term displacement?

A

the total distance just from point a to b without considering the entire path between the two points

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6
Q

What are three examples of scalar quantity?

A

distance
speed
time

no direction

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7
Q

What is the calculation for displacement?

A

pf (final) - pi (initial)

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8
Q

What does a ‘-‘ sign indicate?

A

direction only
back the way they came

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9
Q

how do we calculate velocity?

A

displacement (change in position) / time

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10
Q

What is the calculation for speed?

A

Distance / time

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11
Q

What is the calculation for Pythagoras theorem?

A

a2 + b2 = c2

c = square root of a2 + b2

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12
Q

How do we work out acceleration?

A

change in velocity / change in time

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13
Q

What is velocity?

A

how fast something is going in a particular direction

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14
Q

What is the calculation for displacement when we have velocity and time?

A

Velocity x time = displacement

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15
Q

What is the calculation for velocity when we have displacement and time?

A

displacement / time = velocity

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16
Q

What is the calculation for time when we have displacement and velocity?

A

displacement / velocity = time

17
Q

What is velocity measured in?

A

m/s

18
Q

What is displacement measured in?

A

measured

19
Q

What is time measured in?

A

Seconds

20
Q

On a displacement time graph, how is the ‘slope’ measured?

A

change in ‘y’ / change in ‘x’

or

displacement / time

21
Q

In both a displacement time curve, as steepness increases so does?

A

velocity

22
Q

How do we work out an average?

A

total number / total number of values

23
Q

How do you work out average velocity?

A

total velocity / total number of values

Biomechanics (4 decks)

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