A projectile is fired vertically from the surface of the Earth at 8 km/s.The projectile will
A)go into circular orbit about the Earth.
B)rise and fall back to the Earth's surface.
C)follow an uncertain path.
D)escape from the Earth.

Question

Quizplus · Accepted Answer

The velocity of 8 km/s is less than the Earth's escape velocity of approximately 11.2 km/s, so the projectile will rise and then fall back to the Earth's surface.

A Projectile Is Fired Vertically from the Surface of the Earth