1.) Un automóvil va a 200 km/h y cuanto tardara en recorrer 8km Expresar en minutos.
Para determinar el tiempo en un movimiento rectilíneo uniforme(MRU) recordemos que:
[tex]\boxed{\ \boldsymbol{\mathsf{t=\dfrac{d\vphantom{\big|}}{v\vphantom{\big|}}}}\ }\hspace{30pt} \mathsf{Donde} \hspace{25pt} \begin{array}{l}\mathsf{\blue{\blacktriangleright}\:\:\:v:rapidez}\\\\\mathsf{\blue{\blacktriangleright}\:\:\:d:distancia}\\\\\mathsf{\blue{\blacktriangleright}\:\:\:t:tiempo}\end{array}[/tex]
Nuestros datos son:
[tex]\begin{array}{ccccccccc}\mathsf{\boldsymbol{\bigcirc \kern-8pt\triangleright}\ \ \ d=8\ km}&&&&\mathsf{\boldsymbol{\bigcirc \kern-8pt\triangleright}\ \ \ v=200\ km/h}\end{array}[/tex]
Reemplazamos .
[tex]\begin{array}{c}\mathsf{t = \dfrac{\mathsf{d}}{\mathsf{v}}}\\\\\\\mathsf{t = \dfrac{\mathsf{8\:km}}{\mathsf{200\:\frac{km}{h}}}}\\\\\\\mathsf{t = \dfrac{\mathsf{8\!\!\!\!\!\!\!\dfrac{\hspace{0.4cm}}{~}^{1}\!\not \!km}}{\mathsf{200\!\!\!\!\!\!\!\dfrac{\hspace{0.4cm}}{~}_{25}\!\frac{\not \!km}{h}}}}\\\\\\\mathsf{\:\:\:\:\boxed{\boldsymbol{\mathsf{t = 0.04\:h}}}}\end{array}[/tex]
Para expresarlos en minutos solo lo multiplicamos por 60
[tex]\sf{0.04\ h= 0.04(60\ min) =\boldsymbol{\red{\sf{2.4\ minutos}}}}[/tex]
2) Expresar 35 kg a centigramo.
Para expresar kilogramos a centigramos multiplicaremos por 100000
[tex]\sf{35\ h= 35(100000\ cg) =\boldsymbol{\red{\sf{3500000\ cg}}}}[/tex]
[tex]\boxed{\sf{{R}}\quad\raisebox{10pt}{$\sf{\red{O}}$}\!\!\!\!\raisebox{-10pt}{$\sf{\red{O}}$}\quad\raisebox{15pt}{$\sf{{G}}$}\!\!\!\!\raisebox{-15pt}{$\sf{{G}}$}\quad\raisebox{15pt}{$\sf{\red{H}}$}\!\!\!\!\raisebox{-15pt}{$\sf{\red{H}}$}\quad\raisebox{10pt}{$\sf{{E}}$}\!\!\!\!\raisebox{-10pt}{$\sf{{E}}$}\quad\sf{\red{R}}}\hspace{-64.5pt}\rule{10pt}{.2ex}\:\rule{3pt}{1ex}\rule{3pt}{1.5ex}\rule{3pt}{2ex}\rule{3pt}{1.5ex}\rule{3pt}{1ex}\:\rule{10pt}{.2ex}[/tex]
