CAIE A-Level Mathematics A2 4.5.1 Scalar Product Questions
Practise using work, energy and power to analyse motion against resistance and changing height.
- Syllabus
- 2028–2030
- Course
- Mathematics 9709
- Level
- A2
Exam points
- calculate work done by forces and against resistance
- apply conservation of energy to find speeds, distances and heights
- use power and energy rates in mechanical applications
CAIE A-Level Mathematics A2 4.5.1 Scalar Product Questions question 1
[Maximum number: 2]
A car of mass 1400 kg is moving on a straight road against a constant force of 1250 N resisting the motion.
The car moves along a horizontal section of the road at a constant speed of 36 m s−1.
Calculate the work done against the resisting force during the first 8 seconds.
[WD = 1250×36×8 ]
For using Work Done = Force × Distance.
WD=360000 J
or 360 kJ
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