An example of an equation for a general essay type of question using an example of a projectile and showing part of the question follows:

Find:

  1. Velocity after 4 seconds (5 marks)
  2. Distance fallen after 4 seconds (5 marks)
  3. Time reaching base of cliff (5 marks)
  4. Striking velocity of rock (5 marks)

Answer:

(a) Finding velocity after 4 seconds

EquationOne

(b) Finding distance fallen after 4 seconds

EquationTwo

(c) Finding time reaching base of cliff

EquationThree

(c) Finding striking velocity of rock

EquationFour

Guideline for individual marks:

  • Correct equation 1 mark
  • Correct units for all variables 1 mark
  • Correct Calculation 2 marks
  • Correct answer with correct unit 1 mark