1
Q
linear motion
A
- the movement of body in a straight line or curved line
- where all parts move the same distance
- in the same direction
- over the same time
2
Q
distance
A
total length of a path covered from point A to point B, in m
3
Q
speed
A
rate of change in distance, in m/s, speed = distance / time
4
Q
velocity
A
rate of change of displacement, in m/s, velocity = displacement / time
5
Q
acceleration
A
rate in change in velocity,
= m/s^2
acceleration = (final v - initial v) / time
6
Q
deceleration
A
negative rate in change in velocity ,
= m/s^2,
acceleration = final v - initial v) / time
7
Q
example of linear motion
A
- e.g. during the luge, the performer descends the track without any movement in any of the joints of the body, all parts of the body
8
Q
displacement
A
the shortest straight-line route from start to finish, in metres
A2 - pe physiological
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