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?(1 point)
Responses
Hector's velocity did not change because his speed did not change.
Hector's velocity did not change because his speed did not change.
Hector's velocity changed because his speed changed.
Hector's velocity changed because his speed changed.
Hector's velocity changed because his direction changed.
Hector's velocity changed because his direction changed.
Hector's velocity did not change because his direction did not change.
Hector's velocity changed because his direction changed.
The correct answer is:
Hector's velocity changed because his direction changed.
To determine this, let's first understand the difference between speed and velocity. Speed is a scalar quantity that refers to the magnitude of how fast an object is moving, while velocity is a vector quantity that includes both the speed and direction of an object's motion.
In this scenario, Hector initially heads due south at a speed of 3 m/s. Since he is traveling in a straight line without any change in direction, his velocity is also due south, with a magnitude of 3 m/s.
However, when Hector turns west and continues at the same speed for another three blocks, his direction changes. This change in direction means that his velocity has changed as well, even though his speed remains constant.
Therefore, the correct statement is that Hector's velocity changed because his direction changed.