Physics is the study which deals with matter. What does it relate to?

Match each item in List A with a response in List B by writing its letter below the number of the corresponding item in the table provided.

Complete each of the following statements by writing the correct answer in the spaces provided: (i) A complete measurement is called _________________________________ (ii) Efficiency of a machine is always less than 100% due to ______________________________ (iii) The linear momentum of a body of mass 5 kg moving with a velocity of 2 m/s is (iv) A region of total shadow on a screen is (v) The shape of the surface of water in a clean glass tube is ______________________________

1. A complete measurement is called (1 alama)
2. Efficiency of a machine is always less than 100% due to (1 alama)
3. The linear momentum of a body of mass 5 kg moving with a velocity of 2 m/s is (1 alama)
4. A region of total shadow on a screen is (1 alama)
5. The shape of the surface of water in a clean glass tube is (1 alama)

Boresha ili kuona majibu ya mfano.

What will be the number of images formed when two plane mirrors are set perpendicular to each other?

Which device is used for detecting small electric charges?

What is the equivalent resistance of two resistors of 4 Ω and 6 Ω connected in parallel?

What is the name of the region surrounding a magnet in which the magnetic force is exerted?

The moment of a force about a point is 1120 Nm. If the magnitude of the force is 5600 N, what is the perpendicular distance between the point and the line of action of the force?

Which of the following groups of machines represents the first class levers?

Which of the following will be a suitable graph to represent the motion for a body moving in a straight line with a uniform acceleration?

What force is required to give a mass of 40 kg an acceleration of 0.2 m/s2

Which of the following devices is used for measuring the upper fixed point of a thermometer scale?

Which of the following is not one of the sources of sustainable energies?

A car of mass 8000 kg has one of its tyres having an area of 50 cm² in contact with the ground. If this is four wheel drive vehicle, calculate the pressure exerted on the ground by the car.

1. Why is it easier to cut a bar of soap using a thin piece of wire than a thick one? (0 alama)
2. (1 alama)
3. (1 alama)
4. (1 alama)
5. (1 alama)

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A ball A of mass 100 g moving with a velocity of 5 m/s makes a “head-on” collision with a ball B of mass 500 g moving with a velocity of 1 m/s in the opposite direction. If A and B stick together after the collision; (i) Calculate their common velocity V. (ii) Identify the type of collision

1. State Newton’s second law of motion. (3 alama)
2. Give two examples of the application of the Newton’s third law of motion. (4 alama)
3. Calculate their common velocity V. (2 alama)
4. Identify the type of collision (1 alama)

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Three resistors of 2 Ω, 4 Ω and 6 Ω are connected in series to a battery of e.m.f 24 V and have negligible internal resistance.

1. Draw the circuit diagram including the battery, ammeter, switch and the three resistors. (0 alama)
2. Find the current flowing in the circuit drawn in 10(a) above. (0 alama)
3. Find the potential difference at the ends of each resistor in 10 (a). (0 alama)

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A stone is thrown vertically upwards with an initial velocity of 50 m/s. (i) Calculate the time that the stone will take to return back to the thrower. (ii) What will be the maximum height reached?

1. Write down the second and third equations of motion in a straight line. (2 alama)
2. Calculate the time that the stone will take to return back to the thrower. (0 alama)
3. What will be the maximum height reached? (0 alama)
4. Explain the term velocity as it is applied in motion in a straight line. (1 alama)

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A ball of 0.2 kg is dropped from a height of 20 m. On impact with the ground, it loses 30 J of energy. Calculate the height it reaches on the rebound.

1. Which kind of energy is stored in objects like springs as a result of reversible deformation? (0 alama)
2. Why there is no work done on the books when carried horizontally? (0 alama)
3. A ball of 0.2 kg is dropped from a height of 20 m. On impact with the ground, it loses 30 J of energy. Calculate the height it reaches on the rebound. (0 alama)

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A pulley system is made up of 8 pulleys. An effort of 200 N is applied on the pulley system. If the pulley has an efficiency of 80%, find the: (i) Mechanical advantage of pulley? (ii) Maximum load that can be raised by the effort?

1. Explain how the inclined plane makes it easier to move a load from a lower to a higher position. (5 alama)
2. Draw a diagram of combined pulley system with velocity ratio of 4. (5 alama)
3. Mechanical advantage of pulley? (4 alama)
4. Maximum load that can be raised by the effort? (6 alama)

Boresha ili kuona majibu ya mfano.