Question

a body projected vertically up with initial velocity 'u' what is the velocity at maximum height?

Answer 1

Answer:

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Explanation:

Thus maximum height attained becomes four times (4H) when the initial velocity is increased by 2 times.

Answer 2

$\huge \underline \green{\sf{ Answer :- }}$

Consider the downward direction to be positive.

Acceleration due to gravity =g

Initial velocity =−u

Final velocity  v=0

∴   v2−u2 = 2(−g)H

Or   0−u2 = −2gH

⟹ H = 2gu2

We get that   H ∝u 2

Thus maximum height attained becomes four times (4H) when the initial velocity is increased by 2 times.