Neglecting air resistance, a 1.0-kg projectile has an escape velocity of about 11 km/s at the surface of Earth.The corresponding escape velocity for a 2.0 kg projectile is:
A)5.5 km/s
B)7.8 km/s
C)11 km/s
D)16 km/s
E)22 km/s

Question

Quizplus · Accepted Answer

The escape velocity for an object only depends on the mass of the planet and the distance from the center of the planet. It does not depend on the mass of the projectile. Therefore, the escape velocity for a 2.0 kg projectile would be the same as that for a 1.0 kg projectile, which is 11 km/s.

Neglecting Air Resistance, a 1