Question

PHYSICS TIME

★Find an expression for the escape velocity of a body when projected from the earth. Show that the escape velocity from the earth's surface is about 11.2km/sec.​

Answer 1

Explanation:

In common usage, the initial point is on the surface of a planet or moon. On the surface of the Earth, the escape velocity is about 11.2 km/s, which is approximately 33 times the speed of sound (Mach 33) and several times the muzzle velocity of a rifle bullet (up to 1.7 km/s).

Answer 2

Answer:

In common usage, the initial point is on the surface

of a planet or moon.

On the surface of the Earth, the escape velocity is about 11.2 km/s,

which is approximately 33 times the speed of sound (Mach 33) and several times

the muzzle velocity of a rifle bullet (up to 1.7 km/s).