1 What is derived quantity? flag bookmark A Physical quantity that has magnitude only B Physical quantity that has both magnitude and direction C Physical quantity which cannot be derived from another physical quantity D Physical quantity which is derived from multiplication or division of base quantity or both operations T4 Chapter 1.1 Physical Quantities Derived quantities are formed by combining base quantities through multiplication or division, such as speed = distance ÷ time. Option C is the definition of a base quantity, not a derived one.
2 Diagram 1 shows a strip of ticker tape by a moving trolley. What is type of motion of the trolley? flag bookmark A Uniform deceleration B Uniform acceleration C Uniform velocity D Stationary T4 Chapter 2.1 Linear Motion The dots are equally spaced, indicating equal distances covered in equal time intervals. This constant speed corresponds to uniform velocity.
3 Diagram 2 shows a basket ball and a tennis ball being dropped in a vacuum. Which of the following velocity-time graphs show the correct motion of the basket ball and the tennis ball? flag bookmark A B C D T4 Chapter 2.3 Free Fall Motion In a vacuum, both balls fall with the same acceleration due to gravity, so their velocity-time graphs are straight lines with the same gradient.
4 An object will remain at rest or continue moving with uniform velocity unless it is acted upon by an external force to change its state of motion. What physics law is explained by the statement above? flag bookmark A Newton's First Law of Motion B Newton's Second Law of Motion C Newton's Third Law of Motion D Newton's Universal Law of Gravitation T4 Chapter 2.4 Inertia The statement describes inertia and the need for an external force to change motion, which is exactly Newton’s First Law of Motion.
5 Which of the following does not occur when a force is applied to an object? flag bookmark A The speed of object increases B The shape of the object changes C The mass of the object decreases D The direction of motion of object changes T4 Chapter 2.6 Force A force can change speed, shape, or direction, but it cannot change an object’s mass. Mass is a property of the object itself, not affected by applied force.
6 What effect does low gravity have on humans? flag bookmark A Bone fragility decreases B Bone density increases C Blood pressure decreases D Size of lung decreases T4 Chapter 2.8 Weight Low gravity reduces the pressure exerted by blood, causing blood pressure to drop.
7 Diagram 3 shows the planet Mars orbitting the Sun at an average speed of 24.1 km s⁻¹. The time taken from P to Q is the same as R to S. Which statement is correct describing the movement of the planet Mars in its orbital? flag bookmark A The area of sector RTS is same as PTQ B Acceleration from P to Q same as R to S C The distance from P to Q is same as R to S D The average speed from P to Q is same as R to S T4 Chapter 3.2 Kepler's Laws Kepler's second law states a line from the Sun to the planet sweeps equal areas in equal times. As P to Q and R to S take the same time, the swept areas PTQ and RTS must be equal.
8 Diagram 4 shows a Malaysian-made satellite, RazakSAT. This satellite is equipped with a high-resolution camera used in imaging the Earth's surface. This satellite was launched on 14 July 2009. Which statements is correct characteristics of the satellite? flag bookmark A Orbiting the Earth in Geostationary Earth Orbit B The orbital period is the same as the Earth's rotation period C Orbiting the Earth in the opposite to the direction of the Earth's rotation D The geographical location from the Earth's surface keeps changes T4 Chapter 3.3 Man-made Satellites RazakSAT does not orbit in a geostationary orbit, so it does not stay fixed over one location. Hence, its geographical location relative to Earth's surface keeps changing.
9 Diagram 5 shows hot water poured into a cup. The water is left until it reaches thermal equilibrium with the surrounding. Which statement is true after thermal equilibrium is reached? flag bookmark A Temperature of water is higher than temperature of air B The net rate of heat transfer is zero C No heat transfer between water and air D The rate of heat transfer from water to air is higher T4 Chapter 4.1 Thermal Equilibrium At thermal equilibrium, the water and air have the same temperature, so the net rate of heat transfer between them is zero.
10 Diagram 6 shows the ice cubes melting in the glass. Throughout the process, the temperature of ice in the glass does not change. Why the temperature of ice does not increase even in the hot surrounding? flag bookmark A Heat absorbed by ice to weaken the molecular bond of the ice B Heat absorbed by ice to break the molecular bond of the ice C Heat absorbed by ice to increase kinetic energy of ice molecule D Heat absorbed by ice to decrease kinetic energy of ice molecule T4 Chapter 4.3 Specific Latent Heat During melting, absorbed heat weakens the molecular bonds to change state from solid to liquid, instead of increasing molecular kinetic energy. This is why the temperature remains constant.