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emiliestinnett
03.12.2021 •
Mathematics
Evaluate.
16 ÷ (2 + 1/2) ^2
A) 2 14/25
B) 4 1/4
C) 6 2/5
D) 8 1/4
Solved
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Ответ:
m₁v₁ = m₂v₂
Substituting the given from the problem above,
(0.145 kg)(20 m/s) = (0.145 kg + 120 kg)(v₂)
v₂ = 0.024 m/s
Therefore, the answer is 0.024 m/s.