Question

A car travels for $2hours$ at a constant speed of $60km{h}^{-1}$. The distance travelled by the car is ________.

• A. $180km$
• B. $160km$
• C. $120km$
• D. $240km$

Answer 1

The correct option is C

$120km$

Step - 1: Given

The time taken $T=2hours$

Speed of the car $v=60\raisebox{1ex}{$km$}\!\left/ \!\raisebox{-1ex}{$h$}\right.$

Step - 2: Formula

$Speed\left(v\right)=\frac{Dis\tan ce\left(s\right)}{Time\left(T\right)}$

Step - 3: Distance traveled by car

$$\begin{gathered} Speed\left(v\right)=\frac{Dis\tan ce\left(s\right)}{Time\left(T\right)} \\ 60\raisebox{1ex}{$km$}\!\left/ \!\raisebox{-1ex}{$h$}\right.=\frac{Dis\tan ce\left(s\right)}{2h} \\ Dis\tan ce\left(s\right)=60\raisebox{1ex}{$km$}\!\left/ \!\raisebox{-1ex}{$h$}\right.\times 2h \\ Dis\tan ce\left(s\right)=120km \end{gathered}$$

Hence, option C is correct.