PHYS165 / PHYS 165 Module 4: (Latest Update 2026 / 2027) Physics | Questions, Answers and Review Material | Portage Learning

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PHYS165 / PHYS 165 Module 4: (Latest Update 2026 / 2027) Physics | Questions, Answers & Review Material | Grade A | 100% Correct - Portage Learning ... 2026 / 2027 Academic Year Q: Which TWO of the following will NOT affect the amount of work you do in lifting a book onto a shelf? Answer: The path that the book takes as you lift it to the shelf, and the time it takes you to lift it to the shelf Q: What is the process of producing change in the environment called? A) Energy B) Force C) Power D) Work Answer: D) Work Q: What is the unit of both energy and work? Answer: JOULES Q: True or False: When you hold a dumbbell in place 3 feet off the ground, work is being done. A) True B) False Answer: B) False Q: Which of the following could be a unit for power? A) Candelas B) Horsepower C) Amperes D) Volts Answer: B) Horsepower (and Watts) Q: Which of the following changes will maximize the work done by a force? Answer: Apply the force in the same direction as the displacement Q: How can a waiter apply a force to a tray and NOT do any work on it? Answer: Either apply the force in a direction that is perpendicular to the displacement, have no displacement Q: When the energy of a system decreases, what type of work is most likely done ON that system? Answer: zero work Q: When the energy of a system increases, what type of work is most likely done ON that system? A) Positive work B) Negative work C) Zero work D) There is no relationship between work and energy Answer: A) Positive work Q: Explain why that force does no work. Answer: Large amount of GRAVITATIONAL FORCE and normal force, but no DISPLACEMENT, so no work has been done Q: True or False: A football is kicked into the air. As it rises, its kinetic energy decreases and its gravitational potential energy increases. Answer: true Q: If you wanted to make the kinetic energy of a thrown ball larger, which TWO of the following changes would make the kinetic energy of the ball FOUR times bigger? Answer: Make the mass of the ball four times bigger, and Double the speed of the ball Q: Which of the following forces is NOT an example of a conservative force? A) Gravity B) Electric C) Magnetic D) Friction Answer: D) Friction examples of conservation force Gravity, Electric, Magnetic, Elasticity Q: True or False: To increase the gravitational potential energy of an object, I could increase its mass. Answer: True Q: increases the gravitational potential: Answer: Increase the height of the object above the reference frame Increase the mass of the object Q: True or False: Object A has a velocity of 4.0 m/s, and Object B has a velocity of 2.0 m/s. Object A must have the larger kinetic energy. Answer: False Q: Which of the following statements is the best description of energy? A. Energy is the ability of an object to do work. B. Energy is the ability of an object to produce change in the environment or change in the object itself. C. Both A and B D. Energy is the rate of doing work. Answer: C. Both A and B energy is the ability to do work, or the ability to produce change in the environment or the object itself Q: Which of the following is NOT true according to the Law of Conservation of Energy? A) Energy cannot be destroyed. B) Energy cannot be created. C) Energy cannot change forms. D) Energy can be converted from one form to another. Answer: C) Energy cannot change forms. c. If the athlete completes another rep but this time applies the same 426.0 N force an angle of

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