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Physics St John High School Question Paper

Physics St John High School

Course:Secondary Level

Exam Year:2012

ST JOHN HIGH SCHOOL

MOCK-KCSE

TERM TWO

DATE:5/7/2012

PHYSICS

INSTRUCTIONS:
1.No speaking in examination room.
2.Wrong numbering will lead to deduction of marks.

Q.1.Explain what is meant by the terms streamline flow and turbulent flow.
(2 marks)
Q.2.When a strong wind blows over a gently sloping iron roof of a building,the roof is likely to be blown off. Explain this observation.
(5 marks)
Q.3.When spraying a field with water using a hosepipe,it is a common to reduce the pipe's opening in order for water to reach th furthest point.Explain how this is achieved.
(5 marks)
Q.4.1000g of oil flows through a tube of uniform cross-sectional area in 5 s.Determine the rate of flow of the oil given that the density of oil is 1.2kgm.
(3 marks)
Q.5.Water flows into a pipe of varying cross-sectional area.The inlet has a diameter of 10cm.Given that the liquid leaves the pipe at the rate of 0.008m/s,Calculate its inlet velocity.
(5 marks)
Q.6.Defime the terms displacement,speed and velocity.(6 marks)
Q.7.An aeroplane flies 300km due east and then 40 due north.Determine the distance and the displacement covered by the aeroplane.
(5 marks)
Q.8.A boy runs 100m due south and 300m due north in 50 s.Determine:
a)his speed.(2 marks)
b)his velocity(2 marks)
Q.9.On a certain planet, a simple pendulum of length 0.5m has a period of 0.8 seconds.What is the acceleration due to gravity on the planet?
(5 marks)
Q.10.A car starting from rest accelerates uniformly to 2m/s in 10 seconds and continues at that speed for 100 seconds and then decelerates uniformaly to a stop in 5 seconds.
a)Sketch the velocity-time graph for the motion. (2 marks)
b)Determine the distance covered by the car. (2 marks)
c) Determine the average speed of the car during the journey.
(2 marks)
Q.11.A body starting from rest and accelerating uniformly travels 18m in the third second.
What is its velocity at the end of the 5th second? (5 marks)
Q.12.A stone is thrown vertically upwards at an initial velocity of 2.94m/s.Determine:
a) the time it took to reach maximum height.
(2 marks)
b)the maximum height it attained. (2 marks)

Physics St John High School Question Paper

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