Why assumptions are made up of equation of motion is question ka answer de de physics ka hai correct wala answer dijiyega

The assumptions for the equations of motion are made because:

The equations of motion ($v = u + at$, $s = ut + \frac{1}{2}at^2$, $v^2 = u^2 + 2as$) are derived specifically for situations where the acceleration is constant and the motion occurs along a straight line. If acceleration were not constant, or if the motion were curved, these simple algebraic equations would not accurately describe the motion, and more advanced calculus-based methods would be required.