Question

. Find the speed of the car in m/s which covered a distance of 450 km in 9.5 hrs.​

Answer 1

$\huge{ \purple{ \bf\underline{\underline{Question : }}}}$

$\begin{array}{l} \bf Find \: the \: speed \: of \: the \: car \: in \: m/s \\ \bf which \: covered \: a \: distance \: of \: 450 \\ \bf km \: in \: 9.5 \: hours. \end{array}$

$\huge{ \purple{ \bf\underline{\underline{ Answer : }}}}$

$\bf Speed \: of \: car =13.16 \: m {s}^{ - 1}$

$\huge{ \purple{ \bf\underline{\underline{Explanation : }}}}$

$\bf Distance \: Covered = 450 \: km$

$\bf Time \: Taken = 9.5 \: hours$

$\red{ \bf\underline{Convert \: Km \: into \: m : }}$

$\bf \longmapsto 1 \: km = 1000 \: m \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \bf\longmapsto 450\: km =450 \times 1000 \: m \\ \\\blue{ \bf\longmapsto 450\: km =450000 \: m \: \: \: \: \: \: \: \: }$

$\red{ \bf\underline{Convert \: hours \: into \: s : }}$

$\bf \longmapsto1 \: hour = 3600 \: s \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:\\ \\ \bf \longmapsto9.5 \: hours = 9.5 \times 3600 \: s \\ \\ \blue{\bf \longmapsto9.5 \: hours = 34200 \: s} \: \: \: \: \: \: \: \: \:$

$\huge \bold{ - - - - - - }$

$\bf Distance \: Covered = 450000 \: m$

$\bf Time \: Taken = 34200 \: s$

$\bf Speed = \frac{ \: Distance \: } {Time}$

$\blue{ \longmapsto \bf Speed \: of \: car = \frac{ \: 4500\cancel{00 }\: }{342 \cancel{00}} } \: \: \: \: \\ \\ \blue{ \longmapsto \bf Speed \: of \: car = \frac{4500}{342} } \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \blue{ \longmapsto \bf Speed \: of \: car =13.16 \: m {s}^{ - 1} }$