Question

guys this que is of motion chapter in physic plz tell me the ans​

Answer 1

We know that, average velocity = (v+u)/2-----(1)

We also know that, s = av.velocity*t

substituting the value from (1)

= s = (v+u)/2 * t----(2)

From the formula 1, we know = v = u+at

substituting this in (2)

s = (u+u+at)/2 * t

s = (2u + at)/2 * t

s = (2ut + at²)/2

If you simplify this equation you get,

s = ut + 1/2 at²