Answers

𝒽=(1/2)·ℊ𝓉²

=(1/2)·9.8·2.0²

=19.8[m]

𝓋²-𝓋₀²=2ℊ𝒽

𝓋>0

𝓋=√(2ℊ𝒽+𝓋₀²)

=√(2·9.8·19.8+9.8²)

=√(9.8²·4+9.8²)

=√{9.8²(4+1)}

=9.8·√5

√5=2.24

=9.8·2.24

=21.952

≈22[m/s]

わからないところがありましたら再度質問お願いします

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