Match the descriptions in List A with the name of its concept related to motion in straight line in List B by writing a letter of the concept below the item number in the table provided. List A (i) The distance covered by an object in a given direction in metres. (ii) The length of the path that is followed by an object and has a magnitude only. (iii) A set of axes from which an observer can measure the position of points in a system. (iv) The rate of change in displacement measured in metres per second. (v) The rate of change in velocity. List B A A frame of reference B A position C Displacement D Distance E Average speed F Velocity G Acceleration

1. The distance covered by an object in a given direction in metres. (1 alama)
2. The length of the path that is followed by an object and has a magnitude only. (1 alama)
3. A set of axes from which an observer can measure the position of points in a system. (1 alama)
4. The rate of change in displacement measured in metres per second. (1 alama)
5. The rate of change in velocity. (1 alama)

Boresha ili kuona majibu ya mfano.

Why are gases much more compressible when compared to liquids? A Molecules in gas are much further apart than those in liquid. B Molecules in gas are free to move than those in liquid. C Molecules in gas move over a short distance. D Molecules in liquid are larger than those in gas.

(b) Draw a simple electric circuit which will be suitable for that experiment. (5 marks) (c) Using the simple electric circuit drawn in (b), complete the circuit diagram to measure an electric current and voltage.

1. Briefly explain two examples that show the applications of Newton's third law of motion in real life situations. (4 alama)
2. Give three properties of magnetic field lines. (6 alama)
3. Name the type of energy shown in the diagram. (1 alama)
4. Draw a simple electric circuit which will be suitable for that experiment. (5 alama)
5. Which one of the three temperature scales would you use to record a temperature of -14 degrees Celsius? Give a reason for your answer. (2 alama)
6. Using the simple electric circuit drawn in (b), complete the circuit diagram to measure an electric current and voltage. (5 alama)
7. Which of the three common temperature scales would you use to record the temperature in your country, assuming it is a hot country? Give a reason for your answer. (4 alama)
8. The rate of change in displacement measured in metres per second. (1 alama)
9. Why does a person fall in this direction from its (2 alama)
10. The rate of change in velocity. (1 alama)

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Why action and reaction forces do not cancel each other?

1. Why action and reaction forces do not cancel each other? (5 alama)
2. Why action and reaction forces do not cancel each other? (5 alama)

Boresha ili kuona majibu ya mfano.

Mention four types of magnets according to their shapes.

1. Mention four types of magnets according to their shapes. (4 alama)

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Mention four types of magnets according to their shapes.

1. Mention four types of magnets according to their shapes. (4 alama)

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The block and tackle pulley system has a velocity ratio of 4. If a load of 225 N is raised by using a force of 75 N; Determine: (i) The mechanical advantage of the system. (ii) The efficiency of the system.

1. Outline four types of simple machines. (4 alama)
2. Calculate the time taken by the bird to hit the ground. (5 alama)
3. The block and tackle pulley system has a velocity ratio of 4. If a load of 225 N is raised by using a force of 75 N; Determine the mechanical advantage of the system. (3 alama)
4. The efficiency of the system. (3 alama)
5. The block and tackle pulley system has a velocity ratio of 4. If a load of 225 N is raised by using a force of 75 N; Determine the efficiency of the system. (3 alama)
6. (1 alama)

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Your Physics teacher has assigned you to determine the weight of a meter rule using the concept of forces in equilibrium. (b) Determine the weight of the meter rule.

1. Name three types of materials which should be used in the task given. (3 alama)
2. Determine the weight of the meter rule. (5 alama)

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A car of mass 1000 kg is moving at a velocity of 20 m/s. Calculate: (a) The momentum of the car. (b) The kinetic energy of the car.

1. Calculate the momentum of the car. (2 alama)
2. Calculate the kinetic energy of the car. (2 alama)

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A 60 W light bulb is connected to a 240 V mains supply. (a) Calculate the current flowing through the bulb. (b) Calculate the resistance of the bulb.

1. Calculate the current flowing through the bulb. (2 alama)
2. Calculate the resistance of the bulb. (2 alama)

Boresha ili kuona majibu ya mfano.

Suppose you are a Physics laboratory leader and you are asked by your teacher to prepare the electrical components and instruments for an experiment to determine the relationship between voltage and current: (a) List down five electrical components which will be used in this experiment.

1. List down five electrical components which will be used in this experiment. (5 alama)

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A 50 kg object is dropped from a height of 20 m. Ignoring air resistance, calculate: (a) The potential energy of the object at the starting point. (b) The kinetic energy of the object just before it hits the ground. (c) The velocity of the object just before it hits the ground.

1. Calculate the potential energy of the object at the starting point. (2 alama)
2. Calculate the kinetic energy of the object just before it hits the ground. (2 alama)
3. Calculate the velocity of the object just before it hits the ground. (2 alama)

Boresha ili kuona majibu ya mfano.