Physics Paper 2, Nov/Dec. 2012  
Questions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Main
General Comments

Question 1

            Question 1

          A ball is projected horizontally from the top of a tall building.  State the factors on           which the distance at which it strikes the ground from the foot of the building depends.


 This was a very popular question among the candidates however, most respondent candidates were only able to state only one of the factors (speed of projection) while majority left out the second factor (time of flight).  Some clever candidates list more than two factors expecting the examiner to pick the correct two for them.  Among the factors listed are:  speed/velocity, angle of projection, acceleration due to gravity “g” height of the building, time of flight.  Candidates just need recall the formula for horizontal range  R  =  Uxt.
          The expected answer  is

    •    Its initial speed
    •    Time (of flight)

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