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PS3.A.1 Energy

Quiz by Adrienne Raspberry

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9 questions
Show answers
  • Q1
    The brakes on a car do 280,000 J of work in stopping the car. If the car travels a distance of 70 m while the brakes are being applied, how large is the force that the brakes exert on the car? W=Fd
    3500 J
    4000 J
    .025 J
    500 J
    30s
  • Q2
    Calculate the kinetic energy of a 678 kg cheetah running after an antelope at 9 m/s.
    27,459 J
    6,102 J
    21,102 J
    3,051 J
    30s
  • Q3
    A jogger is moving with a mass of 37 kg at a speed of 4 m/s. What is the jogger's kinetic energy?
    9.25 J
    2.35 J
    296 J
    592 J
    30s
  • Q4
    What happens to the energy of the ball as it rolls from point D to point E
    Question Image
    The ball is losing potential energy and gaining kinetic energy.
    The ball has more potential energy than kinetic energy.
    The ball has total kinetic energy.
    The ball is losing kinetic energy and gaining potential energy.
    30s
  • Q5
    At what position does the ball have the greatest kinetic energy?
    Question Image
    D
    C
    B
    E
    30s
  • Q6
    A 7 kg history book is placed on a 1.95 m high table. How large is the gravitational potential energy of the book relative to the floor?
    210.22 J
    133.77 J
    13.65 J
    3.59 J
    30s
  • Q7
    The input work on a pulley system is 70 J. If the output work is 39 J, what is the efficiency of the pulley system? e=Work (out)/Work (in)
    56%
    1.79%
    57%
    53%
    30s
  • Q8
    Energy cannot be created or destroyed it only _________________
    transfers into other types of energy.
    gets completely wasted in the transfer to another type of energy.
    becomes electrical energy.
    becomes a mixture of energy and motion.
    30s
  • Q9
    The stored energy due to the chemical bonds between atoms is ____ energy.
    chemical
    gravitational
    electrical
    light
    30s

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