Question

A car moving in uniform motion
covers a distance of 100 km in 2 hrs.
Calculate its speed.

Answer 1

$\color{darkblue}\underline{\underline{\sf Given-}}$

• Car covers Distance (s) = 100km
• Time (t) = 2hrs

$\color{darkblue}\underline{\underline{\sf To \: Find-}}$

• Speed (v)

━━━━━━━━━━━━━━━━━━━━━━━━━━

$\color{green}\underline{\underline{\sf Formula \: Used-}}$

$\color{violet}\underline{\boxed{\sf Speed=\dfrac{Distance}{Time}}}$

━━━━━━━━━━━━━━━━━━━━━━━━━━

$\implies{\sf v=\dfrac{100}{2}}$

$\color{red}\implies{\sf v=50\:km/h}$

Convert it into m/s

$\implies{\sf v=50×\dfrac{5}{18} }$

$\implies{\sf v= \dfrac{250}{18}}$

$\color{red}\implies{\sf v=13.8m/s}$

$\color{darkblue}\underline{\underline{\sf Answer-}}$

Speed of car is $\color{red}{\sf 50\:km/h\:or\:13.8\:m/s}$

Answer 2

$\mathtt{ \huge{ \fbox{Solution :)}}}$

Given ,

Distance (d) = 100 km

Time (t) = 2 hr

We know that ,

$\large{\mathtt{\fbox{Speed \: (s)= \frac{Distance \: (d)}{Time \: (t)} } }}$

Thus ,

S = 100/2

S = 50 km/hr

Speed in terms of m/sec is :

S = (50 × 1000)/60 × 60

S = 50000/3600

S = 500/360

S = 1.38 m/s

Hence , the speed is 50 km/hr or 1.38 m/s

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