Year 2 Biomechanics - Linear motion Flashcards

1
Q

Characteristics- Linear motion

A

Movement of a body in a straight or curved line, where all parts move the same distance, in the same direction, over the same time

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2
Q

Characteristics- Direct Force

A

A force applied through the centre of mass resulting in linear motion

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3
Q

Characteristics - Centre of mass

A

The point at which a body is Balanced in all directions. The point from which weight appears to act.

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4
Q

Characteristics- Newton’s first law

A

An uninterrupted body will continue to travel in linear motion indefinitely unless acted upon by an external or unbalanced force.

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5
Q

Descriptors - Distance

A

Total length of path covered from start to finish

Measured in Metres (M)

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6
Q

Descriptors - Speed

A

Rate of change in distance
Speed = distance/time
Measured in Metres per second (M/S)

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7
Q

Descriptors- Velocity

A

Rate of change in displacement
Measured in Metres per second (M/S)

Velocity=velocity/time taken

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8
Q

Descriptors- Displacement

A

The shortest straight line route from start to finish positions (M)

Measured in Metres

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9
Q

Descriptors- Acceleration

A

The rate of change in velocity
(Final velocity - Initial velocity) /time taken
Measured in Metres per second per second (M/S/S)

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10
Q

Descriptors- Deceleration

A

Occurs when rate of change in velocity is negative or there is decrease in velocity
Measured in m/s/s

Final velocity - initial velocity / time taken

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11
Q

Speed/time graph

A

A visual representation of the speed of motion plotted against the time taken

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12
Q

Distance time graph

A

A visual representation of the distance travelled plotted against the time taken

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13
Q

Gradient

A

The slope of a graph at a particular moment in time

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14
Q

Velocity/time graph

A

A visual representation of the velocity of motion plotted against the time taken

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