Final answer:
The questions discussed here relate to the subject of Physics, particularly to vectors, forces, and mechanics. The statement about the two individuals having different displacements is false, as displacement is independent of path. The force needed to push an object up a ramp cannot be determined solely by height and length, and Earth's curvature does affect projectile motion but generally not significantly over short distances.
Step-by-step explanation:
The maximum saluting distance question appears to be miscategorized and does not align with the examples provided, which are better suited to the subject of Physics. When examining the true or false statements related to displacement and force, as well as projectile motion, we're looking into concepts of vectors, forces, and mechanics within Physics. With displacement, it doesn't matter the path taken, but rather the initial and final position. If two people start and end at the same positions, their displacements are the same, making statement 4 false. In the case of ramp and force (statement 45), the force exerted depends on the angle of the ramp and other factors like friction, not just the height and length, so this statement is also false. As for the projectile motion (statement 33), calculating the initial velocity, max height, and considering Earth's curvature are part of Newtonian Mechanics, a key area in Physics.