A force of 50N is used to lift a load of 100N. What is the mechanical advantage?

Match the item in LIST A with a correct response in LIST B by writing its letters in the table below.

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Fill the correct answer in the blank spaces provided. i. Simple pendulum moves _______________ and ________________. ii. In liquid ___________________ act equally to all directions. iii. The deviation from the true reading is called as ______________________. iv. The rate of change of velocity is called _____________________ v. In the ________________ lever, the fulcrum is located between the effort and the load. vi. Mercury has an ______________________ meniscus. vii. Bandages and cotton wool are used to clean and cover _______________ viii. Liquid and __________ are made up of particles that are in random motion. ix. The_________________ force causes the machine parts to tear and wear. x. The S.I unit of turning effect of a force is ________________________.

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c. A train of mass 22,400kg moving at the rate of 112km/hr is brought to rest in 24 seconds by the action of the brakes. Calculate the braking force applied.

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Consider the figure below. Calculate: i. The current flowing through the circuit ii. Potential difference (p.d) across 5 Ω, 4 Ω and 6 Ω resistors.

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a. i. State Archimedes’ principle ii. Why does a stone sink in water? Page 4 of 16 Candidate’s Examination Number ………………………………………………… b. The mass of an empty density bottle was 50g. When filled with the volume of 20cm3 of petrol its mass become 75g. Calculate the: i. Density of petrol ii. Relative density of petrol 5. a. i. Differentiate between luminous and non-luminous objects. ii. State the laws of reflection of light. Page 5 of 16

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a. i. What is the meaning of First Aid kit? ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ii. Complete the table below by writing uses of items found in First Aid kit. No. Item Uses i. Antiseptic soap ii. Liniment iii. Scissors and razor blade iv. Petroleum jelly b. By using a chart, name all steps involved in a scientific investigation.

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Identify the name of beam shown in the figures below

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A body of mass 8kg is pulled by a force of 40N along a smooth floor through a distance of 80m for 4 seconds. Find i. The work done by a force

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A trolley A of mass 3kg is travelling at 12m/s. It collides with a stationary trolley B of mass 4kg. After the collision, the two continue travelling together at 6m/s. i. Calculate the momentum of trolley A before the collision. ii. Calculate the momentum of trolley A after the collision. iii. Why is there a change in the momentum of trolley A?

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In an experiment to verify Ohm’s law the following results were obtained. Potential difference, (V) Current, (I) 1.0 0.50 1.5 0.75 2.0 1.00 2.5 1.20 3.0 1.50 3.5 2.00 i. Plot the graph of the potential difference (V) against current (I) (on the graph paper). ii. From the graph determine the slope, s. iii. What is the physical significance of the slope, s? iv. Write the S.I unit of the slope in 9 (b) ii above.

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i. List two (2) ways in which resistors can be connected. ii. With two (2) examples, give the meaning of conductor and insulator.

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