| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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A number of forces acting on an object may be replaced by a single force that has the same effect as all the original forces acting together. This single force is called the resultant force. |
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How is resultant force calculated? |
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Students should be able to calculate the resultant of two forces that act in a straight line. |
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What is the resultant force for an aeroplane accelerating with a force of 2300 N when the reaction force of air resistance is 1900 N. |
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Students should be able to describe examples of the forces acting on an isolated object or system. |
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What forces are acting on a car that is speeding up? |
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Students should be able to use free body diagrams to describe qualitatively examples where several forces lead to a resultant force on an object, including balanced forces when the resultant force is zero. |
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What is the resultant force for an object in each of the two examples below?
1) http://bit.ly/2EF4n0D
2) http://bit.ly/2BEpgGo |
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A single force can be resolved into two components acting at right angles to each other. The two component forces together have the same effect as the single force. |
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What happens when two component forces at right angles act together? |
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