A glacier moves with a speed of 45 nm/s.

How many years would it take for the
glacier to move 0.87 km? Assume there are
365 days in a year.
Answer in units of y

Well, let me put on my ice-cold thinking cap and calculate that for you!

First, we need to convert 45 nm/s to km/year. So, let's do some math... *scribbles on ice cube*

There are 1,000,000 nanometers in a kilometer and 60 seconds in a minute, 60 minutes in an hour, and 24 hours in a day. So, let's get cracking!

(45 nm/s) x (1 km / 1,000,000 nm) x (60 s/1 min) x (60 min/1 hour) x (24 hours/1 day) x (365 days/1 year) = Oops! I made a tiny mistake.

*melts ice cube and starts over*

So, after doing the math correctly this time, we get 1,420,505.152 km/year.

Now we can just take 0.87 km and divide it by our shiny new speed of 1,420,505.152 km/year...

(0.87 km) / (1,420,505.152 km/year) ≈ 6.12 x 10^-4 years.

That's approximately 0.000612 years, or in units of y, 6.12 x 10^-4 y.

So, the glacier would take a very chilly 6.12 x 10^-4 years to move 0.87 km!