This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Work done by friction A) Increases kinetic energy of body. B) Decreases kinetic energy of body. C) Increases potential energy of body. D) Decreases potential energy of body. Show Answer Correct Answer: B) Decreases kinetic energy of body. 2. Two horses pull a cart. Each exerts a force of 250.0 N at a speed of 2.0 m/s for 10.0 min. Calculate the power delivered by the horses? A) 0.5 kW. B) 1 kW. C) 5 kW. D) 10 kW. Show Answer Correct Answer: B) 1 kW. 3. When an object is carried at a constantvelocity, A) No work is done on theobject. B) The work done is maximum on theobject. C) The work is done minimum on theobject. D) The work done is 100 % on theobject. Show Answer Correct Answer: A) No work is done on theobject. 4. What is the kinetic energy of a 9.2kg book that has a speed of 5.5m/s? A) .5J. B) 9.2J. C) 25J. D) 139.2J. Show Answer Correct Answer: D) 139.2J. 5. Jake's toy truck has a mass of 3 kilograms (kg). Jake pushes the truck with a force of 10 newtons (N). How much work has Jake done on the truck when he pushes it for 2 meters? A) 5 J. B) 20 J. C) 30 J. D) 60 J. Show Answer Correct Answer: B) 20 J. 6. Which of the following is an example of negative work? A) Lifting a box. B) Ball falling down. C) Car braking. D) Water turbine spinning. Show Answer Correct Answer: C) Car braking. 7. Aaron pulls on the handle of the locked classroom door but fails to open it. Is this an example of positive, negative or zero being done on the wall? A) Positive. B) Negative. C) Zero. D) None of the above. Show Answer Correct Answer: C) Zero. 8. If a body of mass m collides head on, elastically with velocity u with another identical body at rest. After collision velocity of the second body will be A) Zero. B) U. C) 2u. D) Data insufficient. Show Answer Correct Answer: B) U. 9. Describe a real-life example of kinetic energy. A) A stationary rock. B) A parked bicycle. C) A sleeping dog. D) A moving car. Show Answer Correct Answer: D) A moving car. 10. An ideal spring with spring-constant k is hung from the ceiling and a block of mass M is attached to its lower end. The mass is released with the spring is initially upstretched. Then the maximum extension in the spring is A) $\frac{4Mg}{k}$. B) $\frac{2Mg}{k}$. C) $\frac{Mg}{k}$. D) $\frac{Mg}{2k}$. Show Answer Correct Answer: B) $\frac{2Mg}{k}$. 11. An object of mass 4.5 kg is travelling at 7.0 m / s. How much kinetic energy does the object have? A) 16 J. B) 32 J. C) 110 J. D) 220 J. Show Answer Correct Answer: C) 110 J. 12. A bulldozer does 30, 000 J of work over a distance of 20 meters. How much force did it apply? A) 1500 N. B) 2000 N. C) 1000 N. D) 2500 N. Show Answer Correct Answer: A) 1500 N. 13. How are different forms of energy related? A) They can all be transformed into other forms of energy. B) None of them can be transformed into other forms of energy. C) They can be created. D) They can be destroyed. Show Answer Correct Answer: A) They can all be transformed into other forms of energy. 14. If a 1300 kg car has been lifted so it has 19500 J of potential energy, what is the height of the car which it been lifted up? A) 1.5 m. B) 150 m. C) 15 m. D) 0.67 m. Show Answer Correct Answer: A) 1.5 m. 15. If you lift a box that is twice as heavy as your friend you are doing A) The same amount of work. B) Two times more work than your friend. C) Half as much work as your friend. D) Cannot be determined. Show Answer Correct Answer: B) Two times more work than your friend. 16. A student with a mass of 66.0 kg climbs a staircase in 44.0 s. If the distance between the base and the top of the staircase is 14.0 m, how much power will the student deliver by climbing the stairs? (Use g = 9.8 m/s$^{2}$.) A) 21 W. B) 36 W. C) 124 W. D) 206 W. Show Answer Correct Answer: D) 206 W. 17. What is the kinetic energy of a 210 kg motor while traveling at a speed of 90 km/h? A) 850.50 kJ. B) 65.63 kJ. C) 9.45 kJ. D) 2.63 kJ. Show Answer Correct Answer: B) 65.63 kJ. 18. In which one of the following situations is zero net work done? A) A ball rolls down an inclined plane. B) A physics student stretches a spring. C) A projectile fall towards the surface of Earth. D) A box is pulled across a rough floor at constant velocity. Show Answer Correct Answer: D) A box is pulled across a rough floor at constant velocity. 19. A 3 kg ball rolls across the floor at 2 m/s, how much kinetic energy does it have? A) 6 J. B) 12 J. C) 3 J. D) Not enough information is provided. Show Answer Correct Answer: A) 6 J. 20. When you release a stretched rubber band, the rubber band has ..... energy. A) Kinetic. B) Potential. C) None of the above. D) All of the above. Show Answer Correct Answer: A) Kinetic. 21. What happens to kinetic energy as an object falls? A) Kinetic energy is irrelevant to falling objects. B) Kinetic energy increases as an object falls. C) Kinetic energy decreases as an object falls. D) Kinetic energy remains constant as an object falls. Show Answer Correct Answer: B) Kinetic energy increases as an object falls. 22. When you climb a ladder to the top of a slide, what energy do you gain? A) Sound energy. B) Kinetic energy. C) Potential energy. D) Heat energy. Show Answer Correct Answer: C) Potential energy. 23. The product of the net force on an object and distance through which the object is moved (or f x d) equals A) Work. B) Power. C) Energy. D) Acceleration. Show Answer Correct Answer: A) Work. 24. Which of the following is the best example of work being done. A) Doing homework. B) Lifting a box. C) Pushing a stationary box. D) Holding a box. Show Answer Correct Answer: B) Lifting a box. 25. Kinetic energy A) = 1/2 mass X velocity$^{2}$. B) = 1/2 mass X velocity. C) = position X weight. D) = position$^{2}$ X mass. Show Answer Correct Answer: A) = 1/2 mass X velocity$^{2}$. ← PreviousNext →Related QuizzesClass 11 Physics (Part I) Chapter 4 Work Quiz 1Class 11 Physics (Part I) Chapter 4 Work Quiz 2Class 11 Physics (Part I) Chapter 4 Work Quiz 3Class 11 Physics (Part I) Chapter 4 Work Quiz 4Class 11 Physics (Part I) Chapter 4 Work Quiz 6Class 11 Physics (Part I) Chapter 4 Work Quiz 7Class 11 Physics (Part I) Chapter 4 Work Quiz 8Class 11 Physics (Part I) Chapter 4 Work Quiz 9Class 11 Physics (Part I) Chapter 4 Work Quiz 10Class 11 Physics (Part I) Chapter 4 Work Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books