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MODULE 2: WORK, POWER and ENERGY

Quiz by Joel Managbanag

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20 questions
Show answers
  • Q1
    What is the energy of a motorcycle moving slowly at the top of a hill?
    entirely kinetic
    both kinetic and potential
    entirely potential
    entirely gravitational
    30s
  • Q2
    Which 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 jeepney
    a turbine spins
    electric current powers a flat iron
    a headlight is on
    30s
  • Q3
    In the Agus VI Hydroelectric Power (HEP) Plant, which energy transformation takes place?
    nuclear energy to heat to electrical energy
    gravitational potential energy to kinetic energy to electrical energy
    heat to mechanical energy to electrical energy.
    A. electrical energy to mechanical energy to electrical energy.
    30s
  • Q4
    Which 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
  • Q5
    Which 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
  • Q6
    Which sequence of energy transformation best describes what happens when you switch on your battery-run radio?
    Mechanical Energy to Chemical Energy to Sound Energy
    Chemical Energy to  Mechanical Energy to Sound Energy
    Mechanical Energy to Electrical Energy to Sound Energy
    Chemical Energy to Electrical Energy to Sound Energy
    30s
  • Q7
    Which among the forms of energy is considered a potential energy?
    SOUND ENERGY
    THERMAL ENERGY
    RADIANT ENERGY
    CHEMICAL ENERGY
    30s
  • Q8
    Which 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
  • Q9
    A 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
  • Q10
    The 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/s
    18 m/s
    36 m/s
    3 m/s
    60s
  • Q11
    The total mechanical energy of a swinging bungee jumper
    is 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
  • Q12
    A 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 J
    A. more than 90 J
    less than 90 J
    cannot be determined from the information given
    60s
  • Q13
    The wind-up toy that is fully wound and at rest possesses
    neither potential nor kinetic energy
    potential but no kinetic energy
    kinetic but no potential energy
    both potential and kinetic energy in equal amounts
    60s
  • Q14
    In 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
  • Q15
    A 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

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