A satellite orbits Earth in a circular path with a radius of 6,700 kilometers. If it completes one orbit in 90 minutes, what is the satellites speed in kilometers per hour?

Thu, 07 May 2026 06:52:29 +0000

**How Fast Is a Satellite Zooming Around Earth? The Math Behind Our Orbiting Neighbor** What if you could float above Earth, watching the curvature of our planet beneath you? That’s exactly where a satellite travels, sailing a circular orbit just 6,700 kilometers from the surface. With a full loop around our world in just 90 minutes, a fascinating question emerges: what speed does this space-bound platform reach? GPS users, science learners, and curious minds all share this curiosity—especially as satellite technology powers navigation, weather forecasts, and global communications. Understanding orbital speed not only reveals the mechanics of space travel but also highlights why these invisible travelers shape daily life. Here’s how math unpacks this relentless cosmic rhythm—clarely, precisely, and just for you. ### Why This Orbit and 90-Minute Speed Matter A satellite moving in a near-circular orbit around Earth isn’t drifting aimlessly—it’s pulled by gravity, constantly “falling” but moving fast enough sideways to stay in orbit. The combination of orbital radius and period determines the speed, a key rate metric tracked by aerospace analysts and educators. With a radius of 6,700 kilometers, the orbit spans about 42,080 kilometers (calculated using the circumference formula C = 2πr). Completing this loop in 90 minutes—roughly 1.5