Assesssment criteria: Unit 9

1. To place the position of an object in a system of reference made of two axes: X and Y.
2. To define and to label in a drawing: trajectory, distance covered and displacement.
3. To know the formula of the average speed and the unit used to measure it in the SI.
4. To solve problems in which two magnitudes are given (speed, distance or time) and the third one has to be worked out.
5. To change units of speed, distance and time.
6. To explain when a body in motion has acceleration and to know the formula of the average acceleration.
7. Given a movement, to classify it according to its trajectory(curvilinear or rectilinear) and to its speed (uniform or accelerated).