Question

Are the equations of motion applicable to bodies projected vertically up with any velocity, say 8km/s, for determining the maximum height.​

Answer 1

Yes, definitely.

Mathematical solution:

Given, u = 8 km/s = 8000 m/s

a = - 9.8 m/s

v = 0

d = ?

We have, 2ad = v^2 - u^2

or, -19.6d = - 8000 m/s

or, d = 408.16 m (approx.)

HOPE THIS COULD HELP!!!