Answer:
\[{{\text{D}}_{\text{4}}}=0+\frac{9.8}{2}\left(
\text{2}\times \text{4}\text{1} \right)=\text{4}.\text{9}\times \text{7
};\text{ }{{\text{D}}_{\text{5}}}=0+\frac{9.8}{2}\left( \text{2}\times
\text{5}-\text{1} \right)=\text{4}.\text{9}\times \text{9}\]
\[{{\text{D}}_{\text{4}}}/{{\text{D}}_{\text{5}}}=\text{
7}/\text{9}\]
You need to login to perform this action.
You will be redirected in
3 sec