# Homework Help: Speed question

1. Jan 9, 2004

### licia589

a glacier moves with a speed of 41 nm/s. how many years would it take for the glacier to move 0.74 km. answer in units of yr..

ok how do i solve this?

would i multiply 41
.74 and just convert it to yrs?

2. Jan 9, 2004

### Jimmy

Have you forgotten where the homework section is already?

3. Jan 10, 2004

### HallsofIvy

This is just a matter of correcting the units.

Since the speed is given in nm/s (nanometers per second) but you are given a distance in km and asked for an answer in years.

You will need to know how many nanometers there are in a km. I don't happen to remember what a nanometer is so you will have to look that up (it will probably be given as so many nanometers per meter so you will still need to convert to kilometers.

You will also need to determine how many seconds there are in a year! That shouldn't be difficult: there are 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day and 365.25 hours in a year.

4. Jan 10, 2004