Question

A student walks east 100 meters in 2 minutes. She then walks north 200 meters in 4 minutes. Which statement is true?

A: her velocity is constant because her direction is constant

B: her velocity changes because her direction changes

C: her velocity changes because her speed varies

D: her velocity is constant because her speed is constant
Answered by GPT 3.5
B: her velocity changes because her direction changes