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ZanzabumX [31]
3 years ago
14

It takes a car 2 minute(s) to go from rest to 25 m/s east. What is the acceleration

Physics
1 answer:
yKpoI14uk [10]3 years ago
5 0

Explanation:

we first convert 2 minutes to seconds,which will give us 120s (2×60).

<em>v</em><em>=</em><em>u</em><em> </em><em>+</em><em>at</em><em> </em><em>where</em><em> </em><em>(</em><em>v</em><em>=</em><em>final</em><em> </em><em>velocity</em><em>,</em><em>u</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>initial</em><em> </em><em>velocity</em><em>,</em><em>a</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>acceleration</em><em> </em><em>of</em><em> </em><em>the</em><em> </em><em>car</em><em> </em><em>and</em><em> </em><em>t</em><em> </em><em>the</em><em> </em><em>time</em><em> </em><em>taken</em><em>)</em>

<em>V</em><em>=</em><em>25</em><em> </em><em>m</em><em>/</em><em>s</em>

<em>u</em><em>=</em><em>0</em><em> </em><em>m</em><em>/</em><em>s</em><em> </em><em>since</em><em> </em><em>the</em><em> </em><em>car</em><em> </em><em>started</em><em> </em><em>from</em><em> </em><em>rest</em><em> </em>

<em>t</em><em>=</em><em>120s</em>

<em>substituting</em><em> </em><em>the</em><em> </em><em>values</em><em> </em><em>we</em><em> </em><em>get</em><em> </em>

<em>25</em><em>=</em><em>0</em><em>+</em><em>a</em><em> </em><em>(</em><em>120</em><em>)</em>

<em>25</em><em>=</em><em>120a</em><em> </em><em>(</em><em>diving</em><em> </em><em>both</em><em> </em><em>sides</em><em> </em><em>by</em><em> </em><em>120</em><em> </em><em>we</em><em> </em><em>get</em><em>)</em>

<em>a</em><em>=</em><em>0.208m</em><em>/</em><em>s</em><em>^</em><em>2</em>

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