Which of the following four objects has the greatest kinetic energy?
A) An object of mass m moving with speed 4v
B) An object of mass 3m moving with speed 2v
C) An object of mass 4m moving with speed v
D) An object of mass 2m moving with speed 3v
E) None of these; all four objects have the same kinetic energy.
Correct Answer:
Verified
Q25: Potential-energy values may be
A) positive only.
B) negative
Q26: We define the total mechanical energy of
Q27: The energy of position is called
A) potential
Q28: Power is
A) the time rate of doing
Q29: Mechanical energy
A) is always the total energy
Q31: The potential energy of a pendulum is
Q32: Power is
A) work divided by time.
B) velocity
Q33: The energy of a system
A) always increases.
B)
Q34: Which of the following four objects has
Q35: One _ is equal to one joule
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