Question

Can we use equations of motion for motion having variable acceleration?

Answer 1

1. The three equations of motion are $v=u+at$, $s=ut+\frac{1}{2}a{t}^2$ and $v^2-u^2=2as$ .
2. Here u is the initial velocity, v is the final velocity, a is the uniform acceleration, t is the time taken by the object and s is the distance covered by the object.
3. As the value of initial velocity, final velocity, total time, and distance traveled remain the same thus the acceleration is constant in the equations of motion,

3. So equations of motion can not be used for a motion having variable acceleration.

Hence, the answer is no, equations of motion can not be used for motion having variable acceleration.