The following are fundamental quantities in mechanics except.

Which of the following groups represent forces?

Sustainable energy sources are:

The type of light beam produced by the sun is

What makes the last drop of tap water remain hanging for sometime at the outlet of the tap soon after closing the tap?

The volume of a piece of metal with a mass of 150 g and density of 0.03 g/cm3 is:

A liquid at 100°C is as hot as:

Work and energy have the same SI unit called:

When charging bodies by friction, the particles which are transferred are:

First Aid is an immediate assistance or care given to a sick person or an accident victim before getting

The area under the velocity-time graph represents:

When reading the volume of water in a burette, one needs to look at the:

The property of a material to recover its original shape and size on removal of a stretching force is called:

When buying sugar from a shop you pay for its:

(a) Define the term “electrostatics” (b) Draw a diagram of the gold leaf electroscope and label the following: brass cap, insulator, earthed metal case, gold leaf, brass plate and brass rod.

1. Define the term “electrostatics” (1 mk)
2. Draw a diagram of the gold leaf electroscope and label the following: brass cap, insulator, earthed metal case, gold leaf, brass plate and brass rod. (1 mk)

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(a) Define the term “centre of gravity”. (b) A uniform half-metre rule is freely pivoted at 15 cm mark and it balances horizontally when a body of mass of 40 g is hung from a 2 cm mark. (i) Draw a clear labeled diagram to illustrate the forces on a half-metre rule. (ii) Calculate the mass of the rule.

1. Define the term “centre of gravity”. (2 mk)
2. Calculate the mass of the rule. (4 mk)

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An object starts from rest and moves with a velocity of 20 m/s for ? seconds. It maintains this speed for 20 seconds before applying brakes and comes to rest after 10 seconds. (a) Sketch the velocity-time graph for this motion. (b) From the graph drawn in part (a) above, find: (i) Acceleration (ii) Deceleration (c) Calculate the total distance covered for the whole motion.

1. Sketch the velocity-time graph for this motion. (4 mk)
2. Deceleration (3 mk)
3. Calculate the total distance covered for the whole motion. (2 mk)

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(a) What is energy? (b) State the principle of conservation of energy. (c) A motor exerts a horizontal force of 200 N in pulling a box 10 m across a level floor. How much work did the motor do?

1. What is energy? (2 mk)
2. State the principle of conservation of energy. (3 mk)
3. A motor exerts a horizontal force of 200 N in pulling a box 10 m across a level floor. How much work did the motor do? (3 mk)

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(a) State Archimedes’ principle. (b) A body weighs 10 N in air and 8 N when completely immersed in a liquid of density 0.8 g/cm3. Find: (i) The volume of the liquid displaced. (ii) The density of the body.

1. State Archimedes’ principle. (3 mk)
2. The density of the body. (3 mk)

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