The escape velocity for a body projected from Earth is 11 km/s. If projected at 45∘, it will be

Explanation

Here's why each option is correct or incorrect:(a) 11 km/s (Correct): This is the correct answer. Escape velocity depends solely on the mass and radius of the celestial body (Earth in this case), not the direction of projection.(b) 44 km/s (Incorrect): This answer is incorrect. 44 km/s is significantly higher than the actual escape velocity and is not affected by the launch angle.(c) 22 km/s (Incorrect): This answer is also incorrect. Doubling the escape velocity is not a consequence of a 45-degree launch. The actual escape velocity remains unchanged.(d) 11 m/s (Incorrect): This answer is incorrect. The escape velocity is typically measured in kilometers per second (km/s) due to its high value. Additionally, 11 m/s is much lower than the actual escape velocity of Earth.