Question

Write down the equation of motion under gravity​

Answer 1

Explanation:

Under gravity, acceleration is 9.8 m/s² and is denoted by g. When an object is falling freely under gravity, then the above equations would be adjusted as follows: v = u + gt.

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Answer 2

Answer

Equations of motion under gravity :

• v = u + gt
• s = ut + ¹/₂ gt²
• v² - u² = 2gs

Explanation

Take ist equation of motion .

⇒ v = u + at

Under gravity , gravity acts in place  of acceleration

So , sub. g in place of a .

⇒ v = u + gt

Like wise ,

s = ut + ¹/₂ (g)t²

⇒ s = ut + ¹/₂ gt²

v² - u² = 2(g)s

⇒ v² - u² = 2gs