Easy
An object is projected horizontally with speed $\frac{1}{2} \sqrt{\frac{GM}{R}}$ from a point at height $3R$ (where $R$ is the radius and $M$ is the mass of the Earth). The object will:
- AFall back on the surface of the Earth by following a parabolic path
- BFall back on the surface of the Earth by following a hyperbolic path
- CStart rotating around the Earth in a circular orbit
- DEscape from the gravitational field of the Earth
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