Explanation:
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In the equation Ca(s) + 2H2O(l) -->Ca(OH)2(aq) + H2(g) list each element used as a reactant, and tell how many atoms of each
1 answer:
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Answer:
<em>vf=79.38 m/s</em>
<em>y= 321.5 m</em>
Explanation:
<u>Free Fall Motion</u>
A free-falling object falls under the exclusive influence of gravity. Free-falling objects do not encounter air resistance.
If an object is dropped from rest in a free-falling motion, it falls with a constant acceleration called the acceleration of gravity, which value is .
The final velocity of a free-falling object after a time t is given by:
vf=g.t
The distance traveled by a dropped object is:
1.
The penny will fall for t=8.1 s before hitting the ground, thus the height from which it was dropped is:
y= 321.5 m
2.
The final velocity is:
vf=79.38 m/s