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

Question

Quizplus · Accepted Answer

A projectile fired vertically at 8 km/s will not reach escape velocity (approximately 11.2 km/s for Earth) and thus will rise and eventually fall back to Earth's surface.

A Projectile That Is Fired Vertically from the Surface of Earth