Question

i need a perfect reason with the answer

Answer 1

Hey there

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Ur answer is here

Intial velocity = u

Final velocity = 0

Height = h

V²= u²+2as

-u²=-2as

U²/2a=s
So b is correct
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Hope it helps

Answer 2

Answer:

$h=\dfrac{u^2}{2g}$

Explanation:

It is given that, a body is projected vertically upwards with velocity u. We know that the final velocity of the body at maximum height is zero. let u be the initial velocity of the object.

Using third equation of motion :

$v^2-u^2=2(-g)h$

h is the maximum height

g is the acceleration due to gravity

$h=\dfrac{u^2}{2g}$

So, the body will rise to a maximum height of $\dfrac{u^2}{2g}$. Hence, this is the required solution.