MODULE 2: WORK, POWER and ENERGY
Quiz by Joel Managbanag
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20 questions
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- Q1What is the energy of a motorcycle moving slowly at the top of a hill?entirely kineticboth kinetic and potentialentirely potentialentirely gravitational30s
- Q2Which event is explained in the sequence of energy changes shown in the sequence below? CHEMICAL Energy---HEAT---MECHANICAL Energy (With wasted energy)gasoline burns to run a jeepneya turbine spinselectric current powers a flat irona headlight is on30s
- Q3In the Agus VI Hydroelectric Power (HEP) Plant, which energy transformation takes place?nuclear energy to heat to electrical energygravitational potential energy to kinetic energy to electrical energyheat to mechanical energy to electrical energy.A. electrical energy to mechanical energy to electrical energy.30s
- Q4Which event does NOT describe potential energy being changed into kinetic energy?A mango falling from a crate.A box sliding down a ramp.A pen spring being compressed.A stretched rubber band got loosened.30s
- Q5Which event illustrates the direct transformation of potential to kinetic energy?The spring mechanism of a toy is rotated until it locked.A basketball player catches a flying ball.Kathy’s arrow is released from its bow.A Kalesa moves from rest.30s
- Q6Which sequence of energy transformation best describes what happens when you switch on your battery-run radio?Mechanical Energy to Chemical Energy to Sound EnergyChemical Energy to Mechanical Energy to Sound EnergyMechanical Energy to Electrical Energy to Sound EnergyChemical Energy to Electrical Energy to Sound Energy30s
- Q7Which among the forms of energy is considered a potential energy?SOUND ENERGYTHERMAL ENERGYRADIANT ENERGYCHEMICAL ENERGY30s
- Q8Which of the following happens to a coconut that falls freely?Loses both potential energy and kinetic energy.Gains both potential energy and kinetic energy.Gains potential energy and loses kinetic energy.Loses potential energy and gains kinetic energy.30s
- Q9A torchlight fell from a watch tower. The potential energy of the torchlight at the highest point compared to its kinetic energy at the lowest point is _______lesser.equal.not related.greater.30s
- Q10The potential energy of a 1-kg object on top of a hill is 18 J. What is its velocity in m/s just before it hits the bottom of the hill?6 m/s18 m/s36 m/s3 m/s60s
- Q11The total mechanical energy of a swinging bungee jumperis constant, if only conservative forces act.at any one instant, is either all kinetic energy or all potential energy.can never be negative.is equally divided between kinetic energy and potential energy.60s
- Q12A bag drops some distance and gains 90 J of kinetic energy. Considering air resistance, how much gravitational potential energy did the bag lose?exactly 90 JA. more than 90 Jless than 90 Jcannot be determined from the information given60s
- Q13The wind-up toy that is fully wound and at rest possessesneither potential nor kinetic energypotential but no kinetic energykinetic but no potential energyboth potential and kinetic energy in equal amounts60s
- Q14In which case is there a decrease in gravitational potential energy?Water is forced upward through a pipe.Amada stretches horizontally a rubber band.Pamela’s puppy jumps down the chair.A car ascends a steep parking ramp.60s
- Q15A picture frame falls off the wall. Considering the presence of air, how does the kinetic energy (K) just before striking the floor compare to the potential energy (P) at its hanging point?It is impossible to tell.KE is greater than PE.KE is equal to PE.KE is less than PE.60s