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Which of the following is not the equation of motion for a freely falling body?

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v = u + gt

u = v + gt

h = ut + \frac{1}{2} g t^{2}

v^{2} = u^{2} + 2 gh

answer is B.

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Detailed Solution

u = v + gt

is not the equation of motion for a freely falling body.

v = u + gt

is the correct equation. In which

v

is the final velocity after time

t

, and

u

is the initial velocity of the object, subject to the acceleration due to gravity.
In the equations of motion, acceleration

a

and distance

s

are replaced by the acceleration due to gravity

g

and height from ground

h

for freely falling bodies. The equations of motion become.

v = u + gt

h = ut + \frac{1}{2} g t^{2}

v^{2} = u^{2} + 2 gh

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