What happened to the pitch of the sound as the sound source moved past the observer? record your observations.

My GUESS is that as the sound source moved past the observer, the pitch that he heard dropped suddenly, to a lower note. That's only a guess, though. You really need to check with somebody who was there and actually observed it.

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.

it would be c. predictability