Question

Equations of motion are used for uniformly accelerated motion only. Comment.

Answer 1

Step 1: Equations of motion

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. The terms used in these equations are v is the final velocity of the object in motion, u is the initial velocity, a is the uniform acceleration, t is the time taken by the object and s is the distance covered by the object.

Step 2: Uniform acceleration

The acceleration that does not change with respect to time is called uniform acceleration.

Step 3: Explanation

1. In the equation of motion, the displacement is directly proportional to the square of time, thus, the value of acceleration is constant.

2. So these equations are used only for uniformly accelerated motion.

Thus, the equations of motion are used only for uniformly accelerated motion.