This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 3 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. For Hooke's Law, F = kx, where: A) F = force, k = a constant, x = speed. B) F = force, k = a constant, x = extension. C) F = force, k = the spring constant constant, x = speed. D) F = friction, k = spring value, x = speed. Show Answer Correct Answer: B) F = force, k = a constant, x = extension. 2. How much weight of air is always over your head? A) 1 kg. B) 1000 kg. C) 100 kg. D) 10 kg. Show Answer Correct Answer: B) 1000 kg. 3. The imaginary line perpendicular to a reflecting surface is called ..... A) Crooked line. B) Parallel line. C) Angular line. D) Normal line. Show Answer Correct Answer: D) Normal line. 4. What is the force of friction between a moving block of ice that weighs 950 N and the ground if $\mu$k = .12? A) 65 N. B) 226 N. C) 175 N. D) 114 N. Show Answer Correct Answer: D) 114 N. 5. At a constant volume, the ..... of a gas of fixed mass is directly proportional to its ..... A) Height, absolute temperature. B) Displacement, surface area. C) Pressure, absolute temperature. D) None of above. Show Answer Correct Answer: C) Pressure, absolute temperature. 6. Average speed is equal to A) Distance / Time. B) Distance x Time. C) Time / Distance. D) None of above. Show Answer Correct Answer: A) Distance / Time. 7. A rock is falling towards the earth. The action and reaction pair is A) The earth pulls the rock downward, the rock pushes the earth upward. B) The earth pushes the rock downward, the rock pushes the earth downward. C) The rock pulls the earth upward, the earth pushes the rock upward. D) The earth pulls the rock downward, the rock pulls the earth upward. Show Answer Correct Answer: D) The earth pulls the rock downward, the rock pulls the earth upward. 8. The SI unit for time is A) Second (s). B) Minute (min). C) Hour (hr). D) Year (yr). Show Answer Correct Answer: A) Second (s). 9. The difference between a car hitting a wall vs. a car hitting a hay stack is A) The Impulse on the car hitting the wall is greater. B) The change in momentum of the car hitting the wall is greater. C) The force on the car hitting the hay stack is greater. D) The collision time of the car hitting the hay stack is greater. Show Answer Correct Answer: D) The collision time of the car hitting the hay stack is greater. 10. Elastic potential energy is equal to A) Ke. B) Ke2. C) 1/2 k e2. D) 2 k e2. Show Answer Correct Answer: C) 1/2 k e2. 11. Newtons could be used to measure ..... and ..... A) Mass, speed. B) Momentum, work. C) Force, weight. D) Direction, power. Show Answer Correct Answer: C) Force, weight. 12. The distance from Earth to the moon is 384, 400 km. Express the distance in meters using scientific notation A) 3.844 x 105 m. B) 3.844 x 108 m. C) 3.844 x 102 m. D) 3.855 x 1011 m. Show Answer Correct Answer: B) 3.844 x 108 m. 13. The units of momentum are ..... A) Kg m s. B) Kg m s2. C) Kg m/s. D) Kg m/s2. Show Answer Correct Answer: C) Kg m/s. 14. Equation for electrical charge A) Current / time. B) Current x time. C) Current + time. D) Current-time. Show Answer Correct Answer: B) Current x time. 15. The best definition of Physics is that it is ..... A) The study of matter, energy and the interaction between them. B) The study of living things. C) The study of physical things. D) The study of atoms. Show Answer Correct Answer: A) The study of matter, energy and the interaction between them. 16. The EM wave with frequency higher than infrared and lower than UV. A) Radio. B) Visible light. C) Xray. D) Gamma. Show Answer Correct Answer: B) Visible light. 17. What is thermodynamics? A) The study of heat and energy. B) The study of movement. C) The study of microparticles. D) None of above. Show Answer Correct Answer: A) The study of heat and energy. 18. A wave carries .....? A) Energy only. B) Matter only. C) Energy and matter. D) Neither. Show Answer Correct Answer: A) Energy only. 19. Sound produced by a trumpet is caused by the vibration of ..... A) The horn of the instrument. B) Vocal cords. C) The reed in the mouthpiece. D) The performers lips. Show Answer Correct Answer: D) The performers lips. 20. Equation for density A) Mass/volume. B) Volume/mass. C) Mass x volume. D) Volume x mass. Show Answer Correct Answer: A) Mass/volume. ← PreviousNext →Related QuizzesPhysics QuizzesScience QuizzesPhysics Quiz 1Physics Quiz 2Physics Quiz 4Physics Quiz 5Physics Quiz 6Physics Quiz 7Physics Quiz 8Physics Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books