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 direction changes.
Her velocity changes because her direction changes.
Her velocity is constant because her direction is constant.
Her velocity is constant because her direction is constant.
Her velocity changes because her speed varies.
1 answer
The correct statement is:
Her velocity changes because her direction changes.
Velocity is a vector quantity that depends on both speed and direction. In this case, the student first walks east and then changes direction to walk north, which means her velocity changes due to the change in direction, even though her speed may have been constant.
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