I think C is wrong. 15 m/s minus (9.8 m/s time 1.5 seconds)
15 m/s - 14.7 m/s
0.3 m/s

the answer is correct why.

EXPLANATION:

First copy the 15 and u will × now in the no. of (9.8 ×1.5) the equal is 15 m/s -14.7m/s so we - the now the 15-14.7 and the ANSWER IS 0.3m/s.

Explanation:

APPLYOURKNOWLEDGE-_-

DONT FORGET MA'RK ME AS A BRINLIST AND FOLLOW ME

the diagram which shows forces as either balanced = same speed or unbalanced = accelerarting

i would think it's food chain