A student walks east 100 meters in 2 minutes. She then walks north 200 meters in 4 minutes. Which statement is true?(1 point) Responses Her velocity is constant because her speed is constant. Her velocity is constant because her speed is constant. Her velocity changes because her speed varies. Her velocity changes because her speed varies. Her velocity changes because her direction changes. Her velocity changes because her direction changes. Her velocity is constant because her direction is constant.
1 answer
The correct statement is: Her velocity changes because her direction changes.
Velocity is a vector quantity, which means it has both magnitude and direction. Even if the magnitude of her speed were constant, the change in direction results in a change in velocity. In this case, the student first walks east and then north, indicating a change in direction.
