Question

Answer 1

Câu 26)

Ta có: 
\(W=W_{d_{max}}\\ \Leftrightarrow mgh_{max}=\dfrac{mv^2}{2}\\ \Leftrightarrow1.10h_{max}=\dfrac{8^2}{2}\\ \Rightarrow h_{max}=3,2\left(B\right)\)

Câu 27)