Question

117. Муха летит со скоростью 18 км/ч. Выразите эту скорость в сантиметрах в секунду (см/с); метрах в секунду (м/с). Последнюю скорость изобразите графически (стрелкой), полагая, что муха летит в направлении с востока на запад (масштаб: 1 м/с - 0,5 см)

Answer 1

По поводу графического способа делай так, как учили.

Answer 2

Converting Speed to Centimeters per Second and Meters per Second

To convert the speed of the fly from kilometers per hour (km/h) to centimeters per second (cm/s) and meters per second (m/s), we can use the following conversion factors: - 1 km/h = 27.7778 m/s - 1 km/h = 100000 cm/h - 1 hour = 3600 seconds

Let's calculate the speed in cm/s and m/s:

Converting to Centimeters per Second (cm/s): - Speed in cm/s = (Speed in km/h) * (100000 cm/h) / (3600 s/h)

Speed in cm/s = 18 km/h * (100000 cm/h) / (3600 s/h) = 500 cm/s

Converting to Meters per Second (m/s): - Speed in m/s = (Speed in km/h) * (1000 m/km) / (3600 s/h)

Speed in m/s = 18 km/h * (1000 m/km) / (3600 s/h) = 5 m/s

So, the speed of the fly is: - 500 cm/s - 5 m/s

Graphical Representation of the Speed

To represent the speed graphically, we can use a scale of 1 m/s = 0.5 cm. Since the fly is flying from east to west, we can represent this direction with an arrow pointing from right to left.

The graphical representation of the speed of the fly at 5 m/s would be a line with an arrow pointing from right to left, with a length of 2.5 cm (5 m/s * 0.5 cm/m/s).

I hope this helps! If you have further questions, feel free to ask.