Question

23. If a car travels 500 m in 5 minutes
its speed in m/s is
(1 Point)
a) 120 m/s
b) 2 m/s
c) 1.6 m/s
d) 20 m/s​

Answer 1

GIVEN :-

• Distance covered = 500 m.
• Time = 5 minutes.

TO FIND :-

• The speed in m/s.

SOLUTION :-

$\displaystyle \sf \because \: 1 \: minute = 60 \: sec.$

$: \implies\displaystyle \sf \: 5 \: minute = 60 \times 5 \: sec.$

$: \implies \underline{ \boxed{\displaystyle \sf \: 5 \: minute = 300 \: sec}}$

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☯ $\\ \underline{\boldsymbol{According\: to \:the\: Question :}}$

$\dashrightarrow\displaystyle \sf speed \: = \frac{distance \: covered}{time \: taken}$

$\dashrightarrow\displaystyle \sf speed \: = \frac{500}{300} \: ms ^{ - 1}$

$\dashrightarrow\displaystyle \sf speed \: = \frac{5}{3} \: ms ^{ - 1}$

$\dashrightarrow \underline{ \boxed{\displaystyle \sf speed \: = 1.6 \: ms ^{ - 1} }}$

$\therefore\underline{ \displaystyle \sf speed \: of \: car \: in \: \: is \: 1.6 \: m/s.}$

Answer 2

$\tt {\pink{Given}}\begin{cases} \sf{\gray{Distance \: travelled=500 \: m}}\\ \sf{\purple{Time \: taken=5 \: min = 5 \times 60 = 300 \: seconds}}\\ \sf{\orange{Speed= \: ?}}\end{cases}$

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Answer:

$:\implies\sf Distance \: travelled = Speed \times Time$

$:\implies\sf Speed= \dfrac{Distance \: travelled}{Time}$

$:\implies\sf Speed= \dfrac{5\cancel{00}}{3\cancel{00}}$

$:\implies\sf Speed= \dfrac{5}{3}$

$:\implies \underline{ \boxed{\textsf{ \textbf{ Speed = 1.6 m/s}}}}$

$\therefore\underline{\textsf{ The speed of the car in m/s is C) \textbf{1.6 m/s}}}.$