KS5 Scalars and Vectors

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Scalars & Vectors - Objectives

Content

  • Use of SI Units and their prefixes
  • Scalars and vectors
  • Combination and resolution of vectors

Learning Outcomes

Students should be able to:

  • know fundamental (base) units
  • use mass, length, time, quantity of matter, temperature and eletric current and their associated SI units (no knowledge of the candela is required)
  • know and use SI prefixes: T, G, M, k, c, m, μ, n, p and f
  • understand and use standard form
  • distinguish between scalar and vector quantities and give examples.
  • understand that the number of significant figures in the value of a quantity is linked to the uncertainty in that value and hence use an appropriate number of significant figures in their calculations
  • distinguish between scalar and vector quantities and give examples.
  • use a vector triangle to determine the resultant of two perpendicular vectors by scale drawing or calculation
  • use a vector triangle to determine the resultant of two non-perpendicular vectors by scale drawing
  • resolve a vector into two perpendicular components, including the components of forces along and perpendicular to an inclined plane.
  • understand the independent nature of perpendicular components of a vector
  • understand the conditions for equilibrium for two or three coplanar forces acting at a point; problems may be solved either by using resolved forces or by using a closed triangle
  • appreciate the meaning of equilibrium in the context of an object at rest or moving with constant velocity

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