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Let Us Do Direction: Read each item carefully and encircle the letter of the correct answer. 1. It is the study of space and time and how they relate to each other depending on the motion of two objects in different inertial frames of reference. a. Newtonian mechanics C. Electromagnetic Theory b. Special relativity Theory d. Maxwell's electromagnetic theory 2. To which of the following can the concepts of Newtonian mechanics be applied to? a. Objects with speed twice the speed of light b. Objects with speed equal to the speed of light C. Objects with speed much greater than the speed of light d. Objects with speed much smaller than the speed of light. 3. As an object approaches the speed of light, its mass becomes a. Double b. Infinite c. Remain same d. Zero 4. Relation between a force and acceleration it causes was first introduced by a. Albert Einstein C. Euclid b. Carl Friedrich Gauss d. Isaac Newton 5. Find the charge density when the electric flux density is given by 2x i + 3y j + 4z k. a. 0 b.9 C.10 d. 24 6. Find the conduction current density of a material with conductivity 200units and electric field 1.5 units. a. 30 b. 150 C. 300 d. 400/30 7. A frame of reference has four coordinates, x, y, z and t is referred to as the a. Initial frame of reference c. Space-time reference b. Non-Initial frame of reference d. Four-dimensional plane 8. According to Einstein's Special Theory of Relativity, laws of Physics can be formulated based on a. Quantum State b. Inertial Frame of Reference C. Non-Initial frame of reference d. Both Inertial Frame of Reference and Non-Initial frame of reference9. A man, who weighs 60 kg on Earth, weighs 61 kg on rocket, as measured by an observer on Earth. What is the speed of the rocket? a. 2.5 x 10 m/s c. 5.5 x 10 m/s b. 2.5 x 10' m/s d. 5.5 x 10 m/s 10. Einstein theory of special relativity is based on what two postulates? Choose all that apply. 1. The laws of physics are the same in all inertial frames of reference moving with constant velocity relative to one another. Il. The laws of physics application change based on the condition of the observer. Ill. The speed of light is constant in all inertial frame of reference. IV. The speed of light depends on the speed of the observer. a. I only c. II and IV b. I and II d. I and Ill 11. Which of the following describes the speed of light according to Newtonian mechanics? a. The speed of light is infinite. b. The speed of light is constant. C. The speed of light depends on its source. d. The speed of light depends on the speed of the observer. 12. Which of the following correctly describes the statement: The speed of light is constant? a. The statement is sometimes true. c. The statement is never true. b. The statement is always true d. The statement is sometimes false. 13. Which of the following is a postulate of special relativity? a. The color of light is the same for all observers. b. The relative speed of two objects is the same for all observers. C. Physicists can make no measurements in a moving reference frame. d. The laws of physics are the same for all observers in uniformly moving frames of reference. 14. Consider the list of physical properties below. According to special relativity, which ones are dependent on the observer speed? a. Energy b. Length c. Time d. All of these 15. One of the strange consequences of special relativity is that a. time can move backward. b. forces that are not real can be felt by some observers. C. people moving at high speeds will feel crushed by length contraction. d. two events may appear simultaneous to one observer but not another