an object dropped from cliff falls with a constant acceleration of 10m/s2 find its speed after 2s after it was dropprd

initial velocity,

*u*= 0 m/s

acceleration.

*a*= 10 m/s

^{2}

final velocity,

*v*= ?

time,

*t*= 2 sec

$v=u+at\phantom{\rule{0ex}{0ex}}=0+\left(10\right)\times 2\phantom{\rule{0ex}{0ex}}=20\mathrm{m}/\mathrm{s}$

So, after 2 sec, its velocity is 20 m/s.

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