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An object takes 5 s to reach the ground from a height of 5 m on a planet . what is the value of g on the planet? |
| Answer» <html><body><p><em><strong>Answer:</strong></em></p><p><em><strong><a href="https://interviewquestions.tuteehub.com/tag/time-19467" style="font-weight:bold;" target="_blank" title="Click to know more about TIME">TIME</a> taken, t = 5 seconds</strong></em></p><p><em><strong></strong></em></p><p><em><strong>Displacement, s = 5 metres</strong></em></p><p><em><strong></strong></em></p><p><em><strong>Initial velocity, u = 0 metres/second</strong></em></p><p><em><strong></strong></em></p><p><em><strong>Let the acceleration be a [<a href="https://interviewquestions.tuteehub.com/tag/math-11490" style="font-weight:bold;" target="_blank" title="Click to know more about MATH">MATH</a>]m/s^2[/math].</strong></em></p><p><em><strong></strong></em></p><p><em><strong>When the acceleration is constant, initial velocity, acceleration, time taken and displacement are <a href="https://interviewquestions.tuteehub.com/tag/relatedbrbr-2983848" style="font-weight:bold;" target="_blank" title="Click to know more about RELATED">RELATED</a> by a simple formula:</strong></em></p><p><em><strong></strong></em></p><p><em><strong>[math]s = ut + (1/2) at^2[/math]</strong></em></p><p><em><strong></strong></em></p><p><em><strong><a href="https://interviewquestions.tuteehub.com/tag/therefore-706901" style="font-weight:bold;" target="_blank" title="Click to know more about THEREFORE">THEREFORE</a>,</strong></em></p><p><em><strong></strong></em></p><p><em><strong>[math]5 = (0)(5) + (1/2)(a)(5^2)[/math]</strong></em></p><p><em><strong></strong></em></p><p><em><strong>[math]a × (25/2) = 5[/math]</strong></em></p><p><em><strong></strong></em></p><p><em><strong>[math]a = 5/(25/2)[/math]</strong></em></p><p><em><strong></strong></em></p><p><em><strong>[math]a = 10/25[/math]</strong></em></p><p><em><strong></strong></em></p><p><em><strong>[math]a = 2/5[/math]</strong></em></p><p><em><strong></strong></em></p><p><em><strong>[math]a = 0.4[/math]</strong></em></p><p><em><strong></strong></em></p><p><em><strong>Therefore, the acceleration is [math]0.4 m/s^2[/math].</strong></em></p><p><em><strong></strong></em></p><p><em><strong>This is the acceleration due to gravity on that planet.</strong></em></p><p><em><strong></strong></em></p><p><em><strong>Please note that you can't call ‘acceleration due to gravity’ as ‘gravity’.</strong></em></p><p><em><strong></strong></em></p><p><em><strong>Gravity refers to gravitational force. Gravitational force (gravity) due to the planet on any mass ‘m’ (expressed in kilograms) = [math](0.4×m)[/math] newtons.</strong></em></p><p><em><strong></strong></em></p><p><em><strong>A⚡K</strong></em></p><p><em><strong></strong></em></p><p><em><strong></strong></em></p><p><em><strong></strong></em></p><p><em><strong></strong></em></p><p><em><strong>Hope it helps you</strong></em></p><p><em><strong>Pls <a href="https://interviewquestions.tuteehub.com/tag/mark-555248" style="font-weight:bold;" target="_blank" title="Click to know more about MARK">MARK</a> me brainliest</strong></em></p><p><em><strong></strong></em></p></body></html> | |