Q: 8.7 Does the escape speed of a body from the earth depend on (a) the mass of the body, (b) the location from where it is projected, (c) the direction of projection, (d) the height of the location from where the body is launched?

Answers (1)

The escape velocity from the earth is given by :

                                           V_{esc}\ =\ \sqrt{2gR}

Since the escape velocity depends upon the reference (potential energy), so it only depends upon the height of location.

(i)   No

(ii)   No

(iii)  No

(iv)  Yes