Chapter 4 terms
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The oval path followed by a satellite.
ellipse
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being without a support force, as in free fall
weightless
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the speed that a projectile, space probe, or similar object must reach to escape the gravitational influence of Earth or of another celestial body to which it is attracted
escape speed
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the force that an object exerts on a supporting surface
weight
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the curved path followed by a projectile under the influence of constant gravity only
parabola
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a projectile or small celestial body that orbits a larger celestial body
satellite
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any object that moves through the air or through space under the influence of gravity
projectile