Answer:
0.729 meters
Explanation:
d=(V0)t+(1/2)at^2
d=height of shelf
a=9.8 m/s^2 (acceleration due to gravity)
V0=0 m/s (initial downward velocity)
t=0.38586 seconds (1.173 meters/3.04 m/s)
12.8 Watts
P = VI
P = (2 V) (6.4 A)
P = 12.8 W
