What is meant by the contour interval on a topographic map

A contour line is a line drawn on the topographic map to indicate ground elevation or depression. A counter end of all is the vertical distance or difference in elevation between contour lines. If the numbers associated with the contour lines are decreasing there is no decrease in elevation.

Step-by-step explanation:

Given

The first statement implies that:

i.e the components of X

Reading further, we have:

---- The mass of X

--- The relationship between

Required

Two equations to represent the scenario

The two equations are:

--- The relationship between

i.e the components of X

Substitute 25 for X in the second equation

So, the equations are: