Effects of forces — Core Learning Objectives
Note
- Know that forces may produce changes in the size and shape of an object
- Sketch, plot and interpret load-extension graphs for an elastic solid and describe the associated experimental procedures
- Determine the resultant of two or more forces acting along the same straight line
- Know that an object either remains at rest or continues in a straight line at constant speed unless acted on by a resultant force
- State that a resultant force may change the velocity of an object by changing its direction of motion or its speed
- Describe solid friction as the force between two surfaces that may impede motion and produce heating
- Know that fluid friction (drag) acts on an object moving through a liquid
- Know that fluid friction (drag) acts on an object moving through a gas (e.g. air resistance)
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