Going to space
Classical Mechanics
Level
3
The escape velocity for a body projected vertically upwards from the surface of the earth is 11.2 km/s. If the body is projected in a direction making an angle 45° with the vertical, it escape velocity will be
11.2 √2 km/s
11.2 km/s
2 × 11.2 km/s
11.2 √3 km/s
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Escape Velocity is constant for any planet. The projection angle doesn't matter.