The escape velocity of a particle from the surface of the earth is given by

Options

A. zero
B. greater than zero
C. less than zero
D. `-GMm//2R`

Answer

A

Explanation

At `v lt v_(e)`, total energy is negative
`v = v_(e)`, total energy is zero and
`v gt v_(e)` total enegry is positive
So, with the reference to above given cases, it can be said that when the escape velocity is given to a particle, its total energy is zero.