questions

Modelling &amp; Units

A laboratory records the following measurements during a mechanics experiment:
<ul>
<li>a track length of <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>4800</mn><mtext> mm</mtext></mrow><annotation encoding="application/x-tex">4800\text{ mm}</annotation></semantics></math>4800 mm</li>
<li>a moving mass of <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>0.014</mn><mtext> tonnes</mtext></mrow><annotation encoding="application/x-tex">0.014\text{ tonnes}</annotation></semantics></math>0.014 tonnes</li>
<li>a time interval of <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>0.035</mn><mtext> h</mtext></mrow><annotation encoding="application/x-tex">0.035\text{ h}</annotation></semantics></math>0.035 h</li>
</ul>
Convert each measurement into S.I. units.

<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>4.8</mn><mtext> m</mtext></mrow><annotation encoding="application/x-tex">4.8\text{ m}</annotation></semantics></math>4.8 m.

<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>14</mn><mtext> kg</mtext></mrow><annotation encoding="application/x-tex">14\text{ kg}</annotation></semantics></math>14 kg.

<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>126</mn><mtext> s</mtext></mrow><annotation encoding="application/x-tex">126\text{ s}</annotation></semantics></math>126 s.