The correct answer is D) Hector's velocity changed because his direction changed.
Velocity is a vector quantity that includes both magnitude (speed) and direction. In this scenario, Hector initially moved due south, and then turned west. By changing his direction from south to west, his velocity changed as well. Since velocity is a vector quantity, any change in direction results in a change in velocity.
Hector went to the music store by heading due south at 3 m/s, then turning West and continuing at the same speed for another three blocks. Which of the following is true about Hector's velocity?
A Hector's velocity changed because his speed changed.
B Hector's velocity did not change because his direction did not change.
C Hector's velocity did not change because his speed did not change.
D Hector's velocity changed because his direction changed.
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