[单选题]
15.02: A box uniformly slides 7.50 m to rest across a flat surf2c pn7fx69 cmuace in a time q(0ls: o; kgasof 12.0 s.0o;kag qs (l:s What was the initial speed of the box when it started its slide?
A. 0.313 m/s
B. 0.625 m/s
C. 1.25 m/s
D. 2.50 m/s
E. 5.00 m/s