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A bus is traveling at 72km/hr.Brakes are applied and the bus comes to a stop after 10m.Find the retardation of the brakes |
Answer» <html><body><h3><u><a href="https://interviewquestions.tuteehub.com/tag/given-473447" style="font-weight:bold;" target="_blank" title="Click to know more about GIVEN">GIVEN</a>:</u><u>-</u></h3><p></p><ul><li>Initial Velocity (U) = 72km/hr</li><li>Distance (S) = 10m</li><li>Final Velocity (V) = 0</li></ul><p></p><h3><u>To </u><u><a href="https://interviewquestions.tuteehub.com/tag/find-11616" style="font-weight:bold;" target="_blank" title="Click to know more about FIND">FIND</a></u><u>:</u><u>-</u></h3><p></p><ul><li>Deceleration of the brakes.</li></ul><p></p><h3><u>Solution</u><u>:</u><u>-</u></h3><p></p><p>72km/hr</p><p></p><p>→ 72×5/18</p><p>U → 20m/sec</p><p></p><p>As, V²-U² = 2as</p><p></p><p><img align="absmiddle" alt="→\;{\sf{0²-20² = 2×a×10}}" class="latex-formula" id="TexFormula1" src="https://tex.z-dn.net/?f=%E2%86%92%5C%3B%7B%5Csf%7B0%C2%B2-20%C2%B2%20%3D%202%C3%97a%C3%9710%7D%7D" title="→\;{\sf{0²-20² = 2×a×10}}"/></p><p></p><p><img align="absmiddle" alt="→\;{\sf{-20² = 20a}}" class="latex-formula" id="TexFormula2" src="https://tex.z-dn.net/?f=%E2%86%92%5C%3B%7B%5Csf%7B-20%C2%B2%20%3D%2020a%7D%7D" title="→\;{\sf{-20² = 20a}}"/></p><p></p><p><img align="absmiddle" alt="→\;{\sf{400/20 = a}}" class="latex-formula" id="TexFormula3" src="https://tex.z-dn.net/?f=%E2%86%92%5C%3B%7B%5Csf%7B400%2F20%20%3D%20a%7D%7D" title="→\;{\sf{400/20 = a}}"/></p><p></p><p><img align="absmiddle" alt="→\;{\bf{a = 20m/s²}}" class="latex-formula" id="TexFormula4" src="https://tex.z-dn.net/?f=%E2%86%92%5C%3B%7B%5Cbf%7Ba%20%3D%2020m%2Fs%C2%B2%7D%7D" title="→\;{\bf{a = 20m/s²}}"/></p><p></p><p>Retardation = <strong><u>2</u></strong><strong><u>0</u></strong><strong><u>m</u></strong><strong><u>/</u></strong><strong><u>s²</u></strong><strong><u>.</u></strong></p><p></p><p>Hope It <a href="https://interviewquestions.tuteehub.com/tag/helps-1018140" style="font-weight:bold;" target="_blank" title="Click to know more about HELPS">HELPS</a> You ✌️</p><p></p></body></html> | |