Question

It takes Serina 0.25 hours to drive to school. Her route is 16 km long. What is Serina’s average speed on her drive to school?

Answer 1

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

★Given,,

• Total time taken,t=0.25h=1/4 h

• Total distance covered,s=16km

★To find,,

• Average velocity,v=??

★Using formula,,

$\mathtt{\boxed{</strong><strong>v_</strong><strong>{</strong><strong>Av</strong><strong>}</strong><strong>=</strong><strong>\</strong><strong>f</strong><strong>r</strong><strong>a</strong><strong>c</strong><strong>{</strong><strong>s</strong><strong>}</strong><strong>{</strong><strong>t</strong><strong>}</strong><strong>}}$

$\</strong><strong>s</strong><strong>f</strong><strong>{\</strong><strong>i</strong><strong>m</strong><strong>p</strong><strong>l</strong><strong>i</strong><strong>e</strong><strong>s</strong><strong>{v_{Av}=\frac{</strong><strong>1</strong><strong>6</strong><strong>}{</strong><strong>\</strong><strong>f</strong><strong>r</strong><strong>a</strong><strong>c</strong><strong>{</strong><strong>1</strong><strong>}</strong><strong>{</strong><strong>4</strong><strong>}</strong><strong>}}}$

$\sf{\implies{v_{Av}=</strong><strong>1</strong><strong>6</strong><strong>\</strong><strong>t</strong><strong>i</strong><strong>m</strong><strong>e</strong><strong>s</strong><strong>{</strong><strong>4</strong><strong>}</strong><strong>}}$

$\sf{\implies{v_{Av}=</strong><strong>6</strong><strong>4</strong><strong>k</strong><strong>m</strong><strong>h</strong><strong>^</strong><strong>{</strong><strong>-</strong><strong>1</strong><strong>}</strong><strong>}}$

★Therefore,,

Average velocity,,

$\sf{\</strong><strong>b</strong><strong>o</strong><strong>x</strong><strong>e</strong><strong>d</strong><strong>{v_{Av}=64kmh^{-1}}}$

$\rule{200}2$

❣️❣️❣️★Hope it helps★ ❣️❣️❣️