This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 20 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Calee runs at a uniform speed of 9.89 m/s over a distance of 1.4 km. With correct significant digits, how long did it take Calee to run this distance? A) 143 s. B) 1.4 x 102 s. C) 1.4 x 10-1 s. D) 0.143 s. Show Answer Correct Answer: B) 1.4 x 102 s. 2. How far can a person run in 15 minutes if he or she runs at an average speed of 16 km/hr (in miles per hour)? (NOTE = 1 mile =1, 609 m) A) 16 miles. B) 10 miles. C) 4 miles/hr. D) 2.5 miles. Show Answer Correct Answer: D) 2.5 miles. 3. If we double the speed of an object, what happens to the kinetic energy? A) Doubles. B) Quadruples. C) Nothing. D) Is halved. Show Answer Correct Answer: B) Quadruples. 4. The meter is the unit of which physics concept? A) Acceleration. B) Velocity. C) Time. D) Distance. Show Answer Correct Answer: D) Distance. 5. Newton's third law states:for every action, there is an equal and opposite reaction. Explain why, then, a cannon does not go as far as backward as a cannonball goes forward. A) The cannonball has less mass, and mass and acceleration are inversely proportional. B) The cannon has less mass, and mass and acceleration are inversely proportional. C) The cannonball has less mass, and mass and acceleration are directly proportional. D) Newton's third law does not always apply. Show Answer Correct Answer: A) The cannonball has less mass, and mass and acceleration are inversely proportional. 6. What is the temperature in Celsius of a material that is 288.0K? A) 2C. B) 15C. C) 73C. D) 88C. Show Answer Correct Answer: B) 15C. 7. Miguel is lifting a 120 kg mass from the floor to a height of 2.50 m during gym class. If the mass is dropped, how fast is it moving when it hits the ground? A) 9.81 m/s. B) 7.00 m/s. C) 300 m/s. D) 48 m/s. Show Answer Correct Answer: B) 7.00 m/s. 8. A cork floats a distance of 17.5 miles downriver after a period of 3 hours and 30 minutes. What was its average speed? A) 7 mph. B) 10 mph. C) 9 mph. D) 5 mph. Show Answer Correct Answer: D) 5 mph. 9. What is missing from the following equation? Change in thermal energy = specific heat capacity x mass x .....? A) Temperature. B) Power. C) Pressure. D) Change in temperature. Show Answer Correct Answer: D) Change in temperature. 10. A small cart is rolling at constant velocity on a flat track. It fires a ball straight up into the air as it moves. After it is fired, what happens to the ball? A) It depends on how fast the cart is moving. B) It falls behind the cart. C) It falls in front of the cart. D) It falls right back into the cart. E) It remains at rest. Show Answer Correct Answer: D) It falls right back into the cart. 11. Infrared rays are important for A) Warming the Earth. B) Providing visible light for plants. C) Taking X-rays. D) None of above. Show Answer Correct Answer: A) Warming the Earth. 12. What quantity does the following equation calculate:density x gravitational field strength x depth A) Water pressure at a given depth. B) Force of water at a given depth. C) Velocity of water at a given depth. D) Energy of water at a given depth. Show Answer Correct Answer: A) Water pressure at a given depth. 13. The force that acts in the opposite direction of motion when two surfaces come in contact. A) Force. B) Friction. C) Static. D) Kinetic. Show Answer Correct Answer: B) Friction. 14. Which Branch of Physics is most important when studying the motion of everyday objects like a car or bowling ball? A) Mechanics. B) Optics. C) Thermodynamics. D) Electromagnetism. Show Answer Correct Answer: A) Mechanics. 15. It is the exchange particle for the strong nuclear force: A) Graviton. B) Gluon. C) Gamma photon. D) Z boson. Show Answer Correct Answer: B) Gluon. 16. A pot of 2400g of water at a temperature of 25$^ \circ$C is heated on a stove until the water boils (100$^ \circ$C). The specific heat of water is 4.18 J/(g$^ \circ$C).Determine the heat energy needed to heat the water in the pot to boiling. A) 133.76J. B) 43, 062.2J. C) 752, 400J. D) 1, 003, 200J. Show Answer Correct Answer: C) 752, 400J. 17. A current of 2 Amps, at a p.d. of 12V flows for 60 seconds. How much energy is transferred? A) 4410J. B) 1440 J. C) 1440 W. D) 4410W. Show Answer Correct Answer: B) 1440 J. 18. Which variables affect kinetic energy? A) Pressure and volume. B) Velocity and mass. C) Weight and height. D) Temperature and weight. Show Answer Correct Answer: B) Velocity and mass. 19. Convert 5720 cm to km A) 0.0572 km. B) 0.572 km. C) 5.72 km. D) 57.2 km. Show Answer Correct Answer: A) 0.0572 km. 20. The control rod in a nuclear reactor functions to A) Absorb excess neutrons. B) Slow down the neutrons. C) Absorb heat energy. D) Cool down the reactor. Show Answer Correct Answer: A) Absorb excess neutrons. ← PreviousNext →Related QuizzesPhysics QuizzesScience QuizzesPhysics Quiz 1Physics Quiz 2Physics Quiz 3Physics Quiz 4Physics Quiz 5Physics Quiz 6Physics Quiz 7Physics Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books