9 · en
Short, simple sentences with “speeds”, suitable for children and primary/elementary school, with common expressions and related words. You'll also find examples for middle and high school.
The peregrine falcon is one of the fastest birds in the world, reaching speeds of up to 389 km/h.
The spaceship soared through space at dizzying speeds, dodging asteroids and comets while the crew struggled to maintain their sanity amidst the infinite darkness.
The bus speeds forward, crosses an intersection and stops.
Sport is ideal for today's women, as it brings them into direct contact with nature and also strengthens and speeds up their bodies.
The hypersonic speeds anticipated for the X-30 will cause temperatures of more than 2,700 degrees in some parts of the aircraft, due to friction with the atmosphere.
The lithosphere - the outer layer of the Earth - is made up of a small number of rigid plates of varying size. They move relative to each other at speeds of up to several centimetres per year.
The most advanced programme in terms of research and development is Germany's Saenger II, with its aircraft-sized Saenger II and a special engine that will allow it to reach speeds close to Mach 6.8.
"When you are travelling at hypersonic speeds, the few molecules scattered in space can be gathered in large quantities in just a few seconds," says Tim Geoghegan, who is responsible for the design and fuel side.
Beta-1 receptors are in the muscles of the heart and allow adrenaline and noradrenaline to control heart rate and the strength of contractions. If for any reason, internal or external, the mechanism gets out of control, the heart rate speeds up and the pressure rises.
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