**
in m/s
**
?

The answer is 10.

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Well done!!!!

Hamad Farooq
- 7 years, 7 months ago

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- the car is 3 meters long
- if the rear of the car is under the light 0.3 seconds after the front of the car, the car is traveling 3 meters every 0.3 seconds, or 1 meter every tenth of a second.
- If the car is constantly traveling 1 meter every tenth of a second, then the car will travel 10 meters in one second.

the constant speed of the car is 10m/s

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Using the formula $d=rt$ , we have $3=0.3r\iff\frac{3}{0.3}=r\iff\boxed{10=r}$

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RTF: Speed Given: Distance = 3 meters Time = 0.3 seconds Using the formula for speed

Speed =
$\frac{Distance}{Time}$
=
$\frac{3}{0.3}$
=
**
10
$\frac{m}{s}$
**

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given D=3m T=.3s V=D/T then V=3/.3=10

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De acordo com o enunciado temos:

$\begin{cases} S = 3 \; m \\ t = 0,3 \; s \\ v = \end{cases} \\\\ S = v \cdot t \\ 3 = 0,3t \\\\ \frac{3t}{10} = 3 \\\\ \boxed{t = 10 \; m/s}$

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Lenght of Car=3 m Time=0.3 s v=? Solution; S=v/t v=St v=3(0.3) v=0.9=10

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speed=distance/time =3/0.3 =10

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Here is my solution.

v = s/t v = 3/0.3 v = 10

^_^

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$Speed = Distance / Time$Here, Total Distance = $3 m$

And, Total Time = $0.3 s$

then, The Overall Speed is = $\frac{3}{0.3} = 10 m/s$