A glacier moves with a speed of 35 nm/s. How many years would it take for the glacier to move 0.9 km? Assume there are 365 days in a year. Answer in units of y.

D = 0.9 km = 900 m, distance moved

v = 35 nm/s, the speed

v = 35 x 10⁻⁹ m/s

= (35 x 10⁻⁹ m/s) * (365 days/y) * (24*60*60 s/day)

= 1.1038 m/y

The time iaken is

t = d/v

= (900 m) / (1.1038 m/y)

= 815.365 y

Answer: 815.4 y (nearest tenth)