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| 1. |
a trolley while going down in incline plane has an acceleration of 5 metre per second what will be the velocity 8 second after it start |
| Answer» <html><body><p><strong>Answer:</strong></p><p>Acceleration of trolley, a = <a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a> cm/s² = 0.02 m/s²</p><p></p><p>Initial speed of trolley, <a href="https://interviewquestions.tuteehub.com/tag/u-1435036" style="font-weight:bold;" target="_blank" title="Click to know more about U">U</a> = 0 (As trolley starts from rest)</p><p></p><p>Time taken by trolley, t = 3 seconds</p><p></p><p>To Find :-</p><p></p><p>Final speed, v = ??</p><p></p><p>Formula to be <a href="https://interviewquestions.tuteehub.com/tag/used-2318798" style="font-weight:bold;" target="_blank" title="Click to know more about USED">USED</a> :-</p><p></p><p>1st equation of motion,</p><p></p><p>i.e, v = u + at</p><p></p><p>Solution :-</p><p></p><p><a href="https://interviewquestions.tuteehub.com/tag/putting-2963476" style="font-weight:bold;" target="_blank" title="Click to know more about PUTTING">PUTTING</a> all the <a href="https://interviewquestions.tuteehub.com/tag/values-25920" style="font-weight:bold;" target="_blank" title="Click to know more about VALUES">VALUES</a>, we get</p><p></p><p>v = u + at</p><p></p><p>⇒ v = 0 + 0.02 × 3</p><p></p><p>⇒ v = 0.02 × 3</p><p></p><p>⇒ v = 0.06 m/s</p><p></p><p>Hence, the final velocity of trolley is 0.06 m/s.</p><p></p><p>Important Term :-</p><p></p><p>Final speed - Final speed is that speed which is acquired by the body after its start. It is denoted by v. When a body finally comes to rest, its final speed is zero.</p><p><strong>Explanation:</strong></p><p></p></body></html> | |