10.3 Motion and Forces
Learning Objectives
- List the metric units and symbols for time, distance, area, volume, mass, and temperature.
- Interconvert the units for time, mass, volume and distance, using appropriate prefixes (ie mm, cm, m, km).
- Describe motion in terms of distance, time, speed, and acceleration.
- State the units of distance, time, speed, acceleration, force and energy (work).
- Demonstrate an understanding of the relationship between distance, time and speed by:
- Interpretation of distance and speed / time graphs
- Calculation of average speed from distance and time measurements.
- Solving simple problems using v = d/t
- Define the term force and the effect a force can have on an object
- Distinguish between mass and weight
- Define friction and give examples of “good” and “bad” friction
- Describe ways of increasing or decreasing friction
- Recognise that an unbalanced force produces a change in speed and use F=ma (Newton’s Second Law)
- Determine whether opposing forces on an object are balanced and describe the nature of the resulting motion. (Newton’s First Law).
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