During a practice session

PHYSICS · Multi-part · CBSE · Physics · Units and Measurements · Units and Measurements

Problem

During a practice session, a sprinter runs along two straight track segments before stopping. The measured data are: • First segment distance d1=(95.0 ±0.2) md_1=(95.0\,\pm0.2)\,\text{m} • Second segment distance d2=(104.0 ±0.3) md_2=(104.0\,\pm0.3)\,\text{m} • Total time taken t=(18.5 ±0.2) st=(18.5\,\pm0.2)\,\text{s} The average speed vv is defined as v=d1+d2tv=\dfrac{d_1+d_2}{t}. (i) Find the total distance covered with the correct significant figures. (ii) Calculate the average speed and its percentage uncertainty, quoting the final answer with the appropriate significant figures and unit.

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