Question

What does this equal ? v=2gm/r

Answer 1

Answer:

v²=2GM/R

Step-by-step explanation:

If a projectile is about to leave orbit to never to return again, it's kinetic energy ((mv²)/2)equals the magnitude of potential energy((GMm)/R). So,

(mv²)/2 = (GMm)/R

And hence,

v²=2GM/R