How much time will a penny take to free fall from a 370m skyscraper to the street below?
Answers
Answered by
1
Answer:
y=
2
1
at
2
+v
0
t+y
0
Since the object is falling the final height is 0 meters
The initial height is 370m and the acceleration is −9.8㎨
Since the object is dropped, the initial velocity is 0
0=
2
1
(−9.8)t
2
+370
t=
4.9
370
t=8.69s
Answered by
0
Answer:
energy=work.
potential energy =>mgh
=>>>>>>>>>>370m×10=3700m
Now,
work=F×m
3700m=F×m
F=3700 N
Explanation:
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