https://ejercicios-fyq.com/ Ejercicios Resueltos, Situaciones de aprendizaje y VÍDEOS de Física y Química para Secundaria y Bachillerato es SPIP - www.spip.net https://ejercicios-fyq.com/local/cache-vignettes/L144xH25/siteon0-da713.png?1758361862 https://ejercicios-fyq.com/ 25 144 https://ejercicios-fyq.com/Calculation-of-braking-acceleration-8312 https://ejercicios-fyq.com/Calculation-of-braking-acceleration-8312 2024-09-16T03:46:33Z text/html es F_y_Q MRUA Kinematics Acceleration Uniformly accelerated rectilinear motion SOLVED <p>Determine the acceleration of a car, initially moving at a speed of 120 km/h, knowing that it takes 20 seconds to come to a complete stop.</p> - <a href="https://ejercicios-fyq.com/Movements" rel="directory">Movements</a> / <a href="https://ejercicios-fyq.com/MRUA" rel="tag">MRUA</a>, <a href="https://ejercicios-fyq.com/Kinematics" rel="tag">Kinematics</a>, <a href="https://ejercicios-fyq.com/Acceleration" rel="tag">Acceleration</a>, <a href="https://ejercicios-fyq.com/Uniformly-accelerated-rectilinear-motion" rel="tag">Uniformly accelerated rectilinear motion</a>, <a href="https://ejercicios-fyq.com/SOLVED" rel="tag">SOLVED</a> <div class='rss_texte'><p>Determine the acceleration of a car, initially moving at a speed of 120 km/h, knowing that it takes 20 seconds to come to a complete stop.</p></div> <hr /> <div <div class='rss_ps'><p>The car will have changed its speed by 120 km/h in those 20 seconds. First, convert the speed to International System units: <br/> <br/> <img src='https://ejercicios-fyq.com/local/cache-TeX/3c92d2cfff9f9d1e10ef3bf400fdcb48.png' style="vertical-align:middle;" width="356" height="50" alt="120\ \frac{\cancel{km}}{\cancel{h}}\cdot \frac{1\ 000\ m}{1\ \cancel{km}}\cdot \frac{1\ \cancel{h}}{3\ 600\ s} = \color[RGB]{0,112,192}{\bm{33.3\ \frac{m}{s}}}" title="120\ \frac{\cancel{km}}{\cancel{h}}\cdot \frac{1\ 000\ m}{1\ \cancel{km}}\cdot \frac{1\ \cancel{h}}{3\ 600\ s} = \color[RGB]{0,112,192}{\bm{33.3\ \frac{m}{s}}}" /> <br/> <br/> The acceleration will be: <br/> <br/> <p class="spip" style="text-align: center;"><img src='https://ejercicios-fyq.com/local/cache-TeX/bedcd86f3117d8395e13cd95675ccf3d.png' style="vertical-align:middle;" width="353" height="49" alt="a = \frac{\Delta v}{\Delta t} = \frac{(0 - 33.3)\ \frac{m}{s}}{20\ s} = \fbox{\color[RGB]{192,0,0}{\bm{-1.67\ \frac{m}{s^2}}}}" title="a = \frac{\Delta v}{\Delta t} = \frac{(0 - 33.3)\ \frac{m}{s}}{20\ s} = \fbox{\color[RGB]{192,0,0}{\bm{-1.67\ \frac{m}{s^2}}}}" /></p> </math></p></div>