Ok.. this one is a bit long but I really need help on this one.

An approach path for an aircraft landing is shown in the figure and satisfies the following conditions:

(I). the cruising altitude is h when descent starts at a horizontal distance L from touch down at the origin.

ii. the pilot must maintain a constant horizontal speed v throughout decent.

iii. The absolute value of the vertical acceleration should not exceed a constant k9which is much less than the acceleration due to gravity).

Use the conditions ii and iii to show that:

6hv^2/l^2 is less than or equal to k?

Question

Ok.. this one is a bit long but I really need help on this one.

An approach path for an aircraft landing is shown in the figure and satisfies the following conditions:

(I). the cruising altitude is h when descent starts at a horizontal distance L from touch down at the origin.

ii. the pilot must maintain a constant horizontal speed v throughout decent.

iii.  The absolute value of the vertical acceleration should not exceed a constant k9which is much less than the acceleration due to gravity).

Use the conditions ii and iii to show that:

6hv^2/l^2 is less than or equal to k?