Final answer:
The initial height of the arrow shot upward on Mars is 0 meters when t = 0 seconds, according to the given equation y = 57t - 1.86t^2.
Step-by-step explanation:
The student's question asks about the initial height of the arrow when it is shot upward on Mars with a given motion equation. The initial height of a projectile is found when t = 0 seconds. In this case, if we plug t = 0 into the equation y = 57t - 1.86t2, we find that the height y is simply 0 meters. So the initial height of the arrow is 0 meters, which is option b.