Respuesta :

Answer: Charlotte's speed in meter/second is 2.5m/s.


Step-by-step explanation:

Given speed of Charlotte in kilometer per hour = 9 km/h

We need to find the Charlotte's speed in meter per second.

We know 1 kilometer = 1000 meter

And 1 hour = 3600 seconds.

Plugging those values of km and hour in given speed in km/h, we get

[tex]9\ \frac{km}{h} = 9\times \ \frac{1000m}{3600 seconds}[/tex]

[tex]=\frac{10m}{4s}= 2.5\ m/s[/tex].

Therefore,

Charlotte's speed in meter/second is 2.5m/s.

Answer:

Speed of Charlotte in a Unit which includes Km and hour [tex]=9 \frac{\text{Km}}{\text{hour}}[/tex]

1 Km=1000 meter

1 hour=60 minutes=3600 seconds

Speed of Charlotte in a Unit which includes meter and second is

                     [tex]=\frac{9 \times 1000}{3600}\frac{\text{meter}}{\text{seconds}}\\\\=\frac{90}{36}\frac{\text{meter}}{\text{seconds}}\\\\=\frac{5}{2}\frac{\text{meter}}{\text{seconds}}[/tex]