Police at a crime scene find a ceramic mug shattered on the sidewalk. They want to determine the window from which the mug fell, and they decide to make a model of the fall. Which quantity would be an important boundary condition for this model?

Question

A. The initial height of the mug above the sidewalk.
B. The hardness of the sidewalk where the mug landed.
C. The final speed of the mug.
D. The time of day when the incident occurred.

Answer 1

I think the answer is A or C

Answer 2

Thanks guys, the answer was actually B though.

Answer 3

thx