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isahbellas
17.04.2020 •
Mathematics
Which statement is true?...
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Ответ:
option B is the correct option..
exammples,
1+2=3
4+5=9
9+8=17 etc...
HOPE THIS HELPS
Ответ:
a. 0.379m
b.2.646 m/s
Step-by-step explanation:
Let mass of first stone=![m_1](/tpl/images/0329/0153/1cdb9.png)
Mass of second stone=![5m_1](/tpl/images/0329/0153/7bcec.png)
Both stones are in free fall.
The first one free fall during![t_1=420 ms=420\times 10^{-3}=0.42 s](/tpl/images/0329/0153/17d26.png)
The second one free fall during![t_2=t_1-180 ms=0.42-0.18=0.24 s](/tpl/images/0329/0153/a789e.png)
Both stone start motion at the same point with initial velocity=0
a.We have to find the distance between the release point and below the release point where is the center of mass of the two stones.
Substitute the values
Hence, center of mass from the release point at distance=0.379 m
b.We have to find![v_com](/tpl/images/0329/0153/02741.png)
Now,![v_{com}=\frac{4.116+5(2.352)}{6}=2.646 m/s](/tpl/images/0329/0153/cc03d.png)