Descomposition is a physical changes
2 answers:
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In an uniformly accelerated motion, the velocity of the object follows the law:
where
is the initial velocity, a the acceleration and t the time.
In our problem, the robot starts from rest, so the initial speed is zero:
. The robot is in free fall, so the acceleraion is the gravitational acceleration 
. therefore, after a time 
, the velocity is
where
In our problem, the robot starts from rest, so the initial speed is zero: