A turning effect of force depends on the magnitude of the force. State two other factors that determines the moment of a force (2mks)
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 Define crystal cleavage (1mk)This is the phenomenon in which crystals break/fracture along specific planes to yield fresh smooth surface when hit or subjected to mechanical shock
 A single pendulum consisting of a heavy bob and string is suspended in air as shown in the figure below Mark on the diagram and name one other force acting on the bob. Mark on the diagram and name one other force acting on the bob.
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K.C.S.E Physics Q & A - MODEL 2019PP1QN13
​ Two boxes E and F of masses 2.0 kg and 4.0 kg respectively arc dragged along a frictionless surface using identical forces. State with a reason which box moves with a higher velocity.
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K.C.S.E Physics Q & A - MODEL 2019PP1QN03
State two ways of reducing the surface tension of a liquid.
answer
K.C.S.E Physics Q & A - MODEL 2018PP1QN07A wooden cube of side 0.5 m floats in water fully submerged. Determine the weight of the cube. (density of water = 1 gcm-3).
answer
K.C.S.E Physics Q & A - MODEL 2018PP1QN01
State the reason why an object on earth has a higher weight than on the moon.
answer
K.C.S.E Physics Q & A - MODEL 2017PP1QN02
​In an experiment to determine the density of Liquid R, a student obtained the followed data:
— Mass of an empty density bottle 550 g — Mass of the density bottle + water = 80.0 g — Mass of the density bottle + Liquid R = 70.0 g
​Determine the density of Liquid R. (density of water is 1000 kgm^3)
answer
State why it is easier to separate water into drops than to separate a solid into smaller pieces27/7/2020
K.C.S.E Physics Q & A - MODEL 2016PP1QN12
State why it is easier to separate water into drops than to separate a solid into smaller pieces
answer
K.C.S.E Physics Q & A - MODEL 2016PP1QN04
​Figure 2(a) and 2(b) shows capillary tubes inserted in water and mercury respectively.
​It is observed that in water the meniscus in the capillary tube is higher than the meniscus in the beaker, while in the mercury the meniscus in the capillary tube is lower than the meniscus in the beaker. Explain this observation
answer
K.C.S.E Physics Q & A - MODEL 2014PP1QN03
State the reason why it is not correct to quote the weight of solid objects in kilograms.
answer
K.C.S.E Physics Q & A - MODEL 2012PP1QN10
​Table 1 shows the results of an experiment carried out to study the properties of a spring.
​State with a reason whether the experiment was done within the elastic limit of the spring.
ANSWER
K.C.S.E Physics Q & A - MODEL 2012PP1QN07
​A balloon is filled with a gas which is lighter than air. It is observed to rise in air upto a certain height. State a reason why the balloon stops rising.
ANSWER
State two environmental hazards that may occur when oil spills over a large surface area of the sea.20/7/2020
K.C.S.E Physics Q & A - MODEL 2012PP1QN06
State two environmental hazards that may occur when oil spills over a large surface area of the sea.
ANSWER
K.C.S.E Physics Q & A - MODEL 2012PP1QN03
A solid weighs 16.5 N on the surface of the moon. The force of gravity on the moon is 1.7 Nk/g. Determine the mass of the solid.
ANSWER
K.C.S.E Physics Q & A - MODEL 2011PP1QN18
(a) Figure 15 shows a metal bolt which is threaded.​
Explain how a metre rule can be used to measure the pitch (distance between adjacent peaks) of the threading.
(b) Figure 16 shows a screw jack whose screw has a pitch of 1mm, and has a handle of 25 cm long. 
Determine the velocity ratio of the jack.
(c) A bullet of mass 60g travelling at 800m/s hits a tree and penetrates a depth of 15 cm before coming to rest. (i) Explain how the energy of the bullet changes as it penetrates the tree. (ii) determine the average retarding force on the bullet.
answers
K.C.S.E Physics Q & A - MODEL 2011PP1QN11&12
​Figure 8 shows a uniform wooden block of mass 2kg and length 25cm lying on a bench. It hangs over the edge of the bench by 10cm. Use the figure to answer questions l1 and 12
​Indicate on the figure two forces acting on the wooden block.
Determine the minimum force that can be applied on the wooden block to make it turn about the edge of the bench
ANSWER
K.C.S.E Physics Q & A - MODEL 2011PP1QN03
​Figure 2 shows a spring balance. It’s spring constant is 125N/m. The scale spreads over a distance of 20cm.
​Determine the maximum weight that can be measured using this spring.
ANSWER
K.C.S.E Physics Q & A - MODEL 2011PP1QN02
State the constant force that opposes the motion of a stone initially at rest, as it falls through air from a tail building.
ANSWER
K.C.S.E Physics Q & A - MODEL 2010PP1QN13
State the SI unit of a spring constant.
answer
K.C.S.E Physics Q & A - MODEL 2010PP1QN10The weight of a solid in air is 5.ON. When it is fully immersed in a liquid of density 800Kgm-3 its weight is 4.04N.
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