Question

A car is increase it speed to 15km/h and 30km/h in 12 seconds then acceleration is

Answer 1

$\textit{\large{\underline{\underline{EXPLANATION:}}}}$

$\sf{Given}\begin{cases}\sf{u=15kmh^{-1}=\frac{25}{6}ms^{-1}}\\ \sf{v=30kmh^{-1}=\frac{25}{3}ms^{-1}}\\ \sf{t=12s}\end{cases}$

$\textbf{\underline{To find acceleration,,}}</p><p>$

$\sf{\boxed{a=\frac{v-u}{t}}}$

$\sf{\implies{a=\frac{\frac{25}{3}-\frac{25}{6}}{12}}}$

$\sf{\implies{a=\frac{\frac{50-25}{6}}{12}}}$

$\sf{\implies{a=\frac{25}{12\times{6}}}}$

$\sf{\implies{a=\frac{25}{72}ms^{-2}}}$

Hence,,

Acc,,

$\sf{\boxed{a=\frac{25}{72}ms^{-2}}}$

Hope it helps ❣️❣️❣️