Mary passes Mike from behind while bicycling. As she passes him, ...

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Mary passes Mike from behind while bicycling. As she passes him,
 
  A) the two have different speeds and different velocities.
  B) the two have the same speeds and the same velocities.
  C) Mike turns into a hippopotamus.
  D) the two have the same speeds but different velocities.
  E) the two have different speeds but the same velocities.

Question 2

Energetically, a fusion reaction can be self-sustaining whenever
 
  A) the reaction obeys the principle of conservation of total energy.
  B) the reaction proceeds from higher to lower energies on the nuclear energy curve.
  C) the reaction proceeds from heavier to lighter nuclei on the nuclear energy curve.
  D) the reaction proceeds from lighter nuclei to heavier nuclei on the nuclear energy curve.
  E) the reaction proceeds from lower to higher energies on the nuclear energy curve.

[briseldagonzales]

Answer to Question 1

A

Answer to Question 2

B

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Thanks

[briseldagonzales]

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