Welcome to Westonci.ca, where finding answers to your questions is made simple by our community of experts. Discover reliable solutions to your questions from a wide network of experts on our comprehensive Q&A platform. Explore comprehensive solutions to your questions from a wide range of professionals on our user-friendly platform.

A car is moving with a uniform speed of [tex]15.0 \, \text{m/s}[/tex] along a straight path. What is the distance covered by the car in 12.0 minutes?

A. [tex]1.02 \times 10^{-3} \, \text{km}[/tex]
B. [tex]1.80 \times 10^{-1} \, \text{km}[/tex]
C. [tex]8.00 \times 10^{-5} \, \text{km}[/tex]
D. [tex]1.08 \times 10^1 \, \text{km}[/tex]

Sagot :

To determine the distance covered by a car moving with a uniform speed of [tex]\(15.0 \, m/s\)[/tex] over a period of 12.0 minutes, we need to follow these steps:

1. Convert the time from minutes to seconds:
We know that 1 minute equals 60 seconds.
[tex]\[ \text{Time in seconds} = 12.0 \, \text{minutes} \times 60 \, \text{seconds/minute} = 720 \, \text{seconds} \][/tex]

2. Calculate the distance covered in meters:
The formula for distance when speed and time are known is:
[tex]\[ \text{Distance} = \text{Speed} \times \text{Time} \][/tex]
Given the speed is [tex]\(15.0 \, m/s\)[/tex] and the time is [tex]\(720 \, \text{seconds}\)[/tex]:
[tex]\[ \text{Distance in meters} = 15.0 \, m/s \times 720 \, \text{seconds} = 10800 \, \text{meters} \][/tex]

3. Convert the distance from meters to kilometers:
We know that 1 kilometer equals 1000 meters.
[tex]\[ \text{Distance in kilometers} = \frac{10800 \, \text{meters}}{1000 \, \text{meters/kilometer}} = 10.8 \, \text{kilometers} \][/tex]

4. Identify the correct option:
Among the provided options:
- [tex]\(1.02 \times 10^{-3} \, \text{km} = 0.00102 \, \text{km}\)[/tex]
- [tex]\(1.80 \times 10^{-1} \, \text{km} = 0.180 \, \text{km}\)[/tex]
- [tex]\(8.00 \times 10^{-5} \, \text{km} = 0.00008 \, \text{km}\)[/tex]
- [tex]\(1.08 \times 10^1 \, \text{km} = 10.8 \, \text{km}\)[/tex]

The correct option is:
[tex]\[ 1.08 \times 10^1 \, \text{km} \][/tex]

Thus, the distance covered by the car in 12.0 minutes is [tex]\(10.8 \, \text{kilometers}\)[/tex].