Question

stone dropped from the top of a building has a velocity of 29.4m/s on reaching ground level. Calculate the time for which stone was falling freely. (Take g = 9.8m/s2​

Answer 1

QUESTION:-

stone dropped from the top of a building has a velocity of 29.4m/s on reaching ground level. Calculate the time for which stone was falling freely. (Take g = 9.8m/s²)

EXPLANATION:-

u= 0 m/s

Final velocity(v)=29.4 m/s

Time taken(t)=To be calculated

Using 1st equation of motion we have-:

$\longrightarrow \boxed{\bigstar\bf\;v=u+at \bigstar}$

Putting values-:

29.4=0+9.8t

t=29.4/9.8

t=3 s

So the time is 3 second

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