Question

A bus travels a distance of 100km in 2.5h. Calculate its average speed. give your answer in km/h

Answer 1

100 x 10/25 = 40 km per hour

Answer 2

$\textbf{ \huge\underline \red{ \underline{question} } : - }$

A bus travels a distance of 100km in 2.5h. Calculate its average speed. give your answer in km/h

$\textbf{\huge\underline{\underline\red{ solution} : - }} \\ \\ \\ \\ \mathfrak{ \: \underline\red{formula} : - } \: \: \: \: \huge{\: a \: = \frac{v - u}{t} } \\ \\ \underline{where} \\ \\ \textbf{ \: a = acceleration} \\ \\ \textbf{ \: v = final \: velocity} \\ \\ \textbf{ \: u = initial \: velocity} \\ \\ \textbf{ \: t \: = time } \\ \\ \\ \\ \textbf{ \small\purple{ \: initial \: velocity \: of \: bus \: is \: zero}} \\ \\ \textbf{ \small\purple{ \:\:final \: velocity \: = 100 \: km \: in \: 2.5 \: hour \: }} \\ \\ \textbf{ \small\purple{ \: time \: = 2.5 hour \: }} \\ \\ \textbf{ \small\purple{ \: by \: formula \: }} \\ \\ = > a \: = \frac{100 - 0}{2.5} = \frac{100}{2.5} = \frac{1000}{25} = \textbf{ 40 \: km \: per \: hour} \\ \\ \textbf{ \red{ \: the \: average \: speed \: of \: bus \: is \: 40 \: km \: per \: hour}} \\ \\ \\ \\ \fbox{ \red{i \: hope \: it \: helps \: you.}}$