Image of jet plane showing the four forces: Lift - upwards, Weight - downwards, Thrust - forwards, and Drag - backwards.

Newton's Second Law with mass constant: F equals m a

F equals Force equals Lift minus weight or thrust minus drag.

a equals F divided by m.

If force remains constant, accelerations is constant:

V equals a t plus V subzero

X equals a T-squared over two plus V subzero T plus X subzero