Centripetal and centrifugal forces are central to circular motion, but they're not the same. Discover the differences between the two often-confused forces.

Abstract: This paper addresses formation control problems for heterogeneous groups of unicycle type mobile agents with fixed cruising speed. The heterogeneity in the group is caused by the cruising ...

This document has been published in the Federal Register. Use the PDF linked in the document sidebar for the official electronic format.

Abstract: The paper discusses the problem of optimal joint estimation of gravity anomalies and the vertical motion of a marine vehicle, including its inertial accelerations, in terms of Bayesian ...

Due to the lapse in federal government funding, NASA is not updating this website. Upon completion of this chapter you will be able to describe the system of terrestrial coordinates, the rotation of ...