What is the speed of the satellite?

1. Sep 6, 2011

1MileCrash

1. The problem statement, all variables and given/known data

An Earth satellite moves in a circular orbit 605 km above the Earth's surface. The period of the motion is 96.6 min.

What is the speed of the satellite?

2. Relevant equations

3. The attempt at a solution

First, I know that it is orbiting 605 km above earth's surface. So, that number plus the radius of earth gives a total for the radius of the motion. That comes out to be about 6976000 meters.

Then, I used the equation:

T = (2pir)/(v)

96.6 = (2pi(6967000)) / (v)

v = 453742.24

But it's marking it as incorrect. Any ideas?

2. Sep 6, 2011

1MileCrash

Shoot me in the face for not converting units.

3. Sep 6, 2011

Rayquesto

if 2pie radius/period=speed then add radius of earth in meters to 605E3meters plug that in for r, change the 96.6minutes to seconds plug that in for T and you should get the right answer.