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| 1. |
Out of light and a heavy body and lighter body having equal kinetic energy which one will move fast |
| Answer» <html><body><p><strong><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a>:</strong></p><p>Kinetic Energy = 1/<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a> * mass * (velocity)^2</p><p></p><p>since we know the kinetic <a href="https://interviewquestions.tuteehub.com/tag/energies-971455" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGIES">ENERGIES</a> of the two masses are equal…</p><p></p><p>KE1 = KE2</p><p></p><p>.:.</p><p></p><p>(1/2) * m1 * (v1)^2 = (1/2) * m2 * (v2)^2</p><p></p><p>.:.</p><p></p><p>m1 * (v1)^2 = m2 * (v2)^2</p><p></p><p>.:.</p><p></p><p>m1 / m2 = (v2)^2 / (v1)^2 OR v2^2 = m1/m2 * v1^2</p><p></p><p>if we say that m1 = 1kg and m2 = 2 kg, then v2^2 = 1/2 * v1^2 or v2 = 1/sqrt(2) * v1. so the lighter mass will move <a href="https://interviewquestions.tuteehub.com/tag/faster-985028" style="font-weight:bold;" target="_blank" title="Click to know more about FASTER">FASTER</a>.</p><p><strong></strong></p><p></p></body></html> | |