• Author / Uploaded
• Roxanne Aquino

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CIRCLE the letter of the best answer. 1. What is the energy of a motorcycle moving slowly at 10. The potential energy of a 1-kg object on top of a hill is the top of a hill? 18 J. What is its velocity in m/s just before it hits the A. entirely kinetic bottom of the hill? A. 36 B. 18 C. 6 D. 3 B. entirely potential C. entirely gravitational 11. The total mechanical energy of a swinging bungee D. both kinetic and potential jumper A. is equally divided between kinetic energy and potential 2. Which event is explained in the sequence of energy energy. changes shown in the diagram below? B. at any one instant, is either all kinetic energy or all potential energy. C. can never be negative. D. is constant, if only conservative forces act. A. a headlight is on B. a turbine spins 12. A bag drops some distance and gains 90 J of kinetic C. electric current powers a flat iron energy. Considering air resistance, how much gravitational D. gasoline burns to run a jeepney potential energy did the bag lose? A. more than 90 J 3. In the Agus VI Hydroelectric Power (HEP) Plant, which B. exactly 90 J energy transformation takes place? C. less than 90 J A. electrical energy mechanical energy D. cannot be determined from the information given electrical energy. B. gravitational potential energy kinetic energy 13. The wind-up toy that is fully wound and at rest electrical energy possesses A. kinetic but no potential energy C. heat mechanical energy electrical energy. B. potential but no kinetic energy D. nuclear energy heat electrical energy C. both potential and kinetic energy in equal amounts D. 4. Which event does NOT describe potential energy being neither potential nor kinetic energy changed into kinetic energy? 14. In which case is there a decrease in gravitational A. A box sliding down a ramp. potential energy? B. A mango falling from a crate. A. Amada stretches horizontally a rubber band. C. A pen spring being compressed. B. A car ascends a steep parking ramp. D. A stretched rubber band got loosened. C. Pamela’s puppy jumps down the chair. 5. Which event illustrates the direct transformation of D. Water is forced upward through a pipe. potential to kinetic energy? 15. A picture frame falls off the wall. Considering the A. A basketball player catches a flying ball. presence of air, how does the kinetic energy (K) just before B. A Kalesa moves from rest. striking the floor compare to the potential energy (P) at its C. Kathy’s arrow is released from its bow. D. The spring mechanism of a toy is rotated until it locked. hanging point? A. K is equal to P. 6. Which sequence of energy transformation best B. K is greater than P. describes what happens when you switch on your battery- C. K is less than P. D. It is impossible to tell. run radio? A. Mechanical Energy Electrical Energy Sound Energy 16. What is the energy of a motorcycle going fast midway B. Mechanical Energy Chemical Energy Sound Energy down a hill? C. Chemical Energy Electrical Energy Sound Energy A. entirely kinetic D. Chemical Energy Mechanical Energy Sound Energy B. entirely potential 7. Which among the forms of energy is considered a C. entirely gravitational D. both kinetic and potential potential energy? A. chemical energy 17. Which event is explained in the sequence of energy B. radiant energy changes shown in the diagram below? C. sound energy D. thermal energy 8. Which of the following happens to a coconut that falls A. a blue spotlight is on freely? B. a runner doing stretches A. Loses potential energy and gains kinetic energy. C. an electric fan rotates B. Loses both potential energy and kinetic energy. D. the battery-powered toy car runs forward C. Gains potential energy and loses kinetic energy. D. Gains both potential energy and kinetic energy. 18. In the Agus VI Hydroelectric Power (HEP) Plant, which 9. A torchlight fell from a watch tower. The potential energy transformation takes place? mechanical energy electrical energy of the torchlight at the highest point compared to its A. electrical energy energy. kinetic energy at the lowest point is _______ A. lesser. B. equal. C. greater. D. not related.

B. gravitational potential energy electrical energy C. heat mechanical energy D. nuclear energy heat

kinetic energy

29. In which case is there an increase in gravitational potential energy? A. Alex stretches horizontally a rubber band. B. A car ascends a car wash ramp. 19. Which events does NOT describe potential energy C. The monkey-eating eagle swoops down from a tree. being changed into kinetic energy? D. Water flows out a horizontal pipe. A. A cart rolling down a hill. B. A rubber foam being compressed. 30. A decorative stone fell off the fence. Considering the C. A student lets go a stretched slinky. presence of air, how does the kinetic energy (K) of the D. A twig falling from a branch. stone just before striking the ground compare to its potential energy (U) on the fence? 20. Which event illustrates the direct transformation of A. K is equal to U. potential to kinetic energy? B. K is greater than U. A. A volleyball player blocks an incoming ball. C. K is less than U. B. A sleeping cow stirs awake. D. It is impossible to tell. C. The wide-open spring door closes slowly. D. The spring of a broken toy shoots up. 31. A 2-kg toy car moves along a frictionless surface with a uniform speed of 6 m/s. What is its kinetic energy? 21. Which sequence of energy transformation best A. 3.6 J B. 36 J C. 366 J D. 3660 J describes what happens when you prepare scrambled egg using an egg beater? 32. Budoy, a junior high school student, lifts a 3-kg book A. Mechanical Energy Electrical Energy Sound Energy from the floor into a cabinet 2.0 m high. With reference to B. Mechanical Energy Chemical Energy + Sound Energy the floor, how much potential energy does the book C. Chemical Energy Mechanical Energy Sound Energy acquire? D. Chemical Energy Mechanical Energy + Sound Energy A. 5.88 J B. 58.88 J C. 588.88 J D. 5888.88 J electrical energy. electrical energy

22. Which among the objects is considered as having 33. Identifying which of the ff happens to the energy of a potential energy? coconut tree that falls freely? A. ambulance siren A. loses P.E and gains K.E B. candle flame B. loses both P.E and K.E C. hot plate C. gains P.E and loses K.E D. milk D. gains both P.E and K.E 23. Which of the following happens to raindrops? A. Loses potential energy and gains kinetic energy. B. Loses both potential energy and kinetic energy. C. Gains potential energy and loses kinetic energy. D. Gains both potential energy and kinetic energy.

34. What energy transformation takes place in a generator? A. EE to M.E B. ME to EE

C. Heat to M.E D. CE to M.E

II. Problem Solving 24. A runner jumps over a hurdle. Neglecting friction, the A stone with a mass of 1 kg was placed initially at a height potential energy of the runner at the highest point of 20 m. Complete the table below given the different compared to his kinetic energy at the lowest point is _____ heights of the ball for every position as it falls. A. lesser. B. equal. C. greater. D. not related. 25. The potential energy of a 4-kg object on top of a hill is 72 J. What is its velocity in m/s just before it hits the ground? A. 36 B. 18 C. 6 D. 3 26. The total mechanical energy of a yoyo A. is equally divided between kinetic energy and potential energy. B. at any one instant, is either all kinetic energy or all potential energy. C. can never be negative. D. is constant, if only conservative forces act. 27. A stone rolls down some distance and gains 45 J of kinetic energy. Considering air resistance, how much gravitational potential energy did the bag lose? A. more than 45 J HEIGHT B. exactly 45 J A. 20 m C. less than 45 J B. 10 m D. cannot be determined from the information given C. 0 28. A fully spring-wound toy fan that is about to rotate possesses A. kinetic but no potential energy B. potential but no kinetic energy C. both potential and kinetic energy in equal amounts D. neither potential nor kinetic energy

P.E. 35____ 37____ 0

K.E 0 38. ____ 40_____

TME 36. ____ 39.___ 41.______