Question 8 a car is traveling at a rate of 45 kilometers per hour. what is the car's rate in meters per second? how many meters will the car travel in 2 seconds? do not round your answers.

The rate in meters per second is 12.5

The car travel 25 meters in 2 seconds

Explanation:

For answering the question is necessary to know the following relations:

1. A kilometer is equivalent to 1000 meters

2. An hour is equivalent to 3600 seconds.

Then using the relations we first need to transform the kilometer per hour into meter per hour, as:

So, 45 Kilometers per hour is equivalent to 45000 meters per hour.

as a second step, we need to transform the meters per hour into meters per second, as:

So, 45 kilometers per hour is equivalent to 12.5meters per second.

That means that every second the car travel 12.5 meters. If the car travels 2 seconds, the meters that the car travel is equivalent to multiply 12.5 with 2, as:

most voltage drop calculators want the distance between the source and destination. then internally, they double it so both the source and return wires are calculated. but you need to know which distance the calculator uses so you're not half of what you should be or double what you should be.

most circuit breakers will not take a #6 directly, so the electrician will have to splice on a smaller pigtail. you also have to upsize the grounding wire when you upsized the ungrounded (hot) wire (see note in 250.122). this will preclude using most cable assemblies, as a cable with #6 copper will most likely only have a #10 grounding conductor. you need a #6 grounding conductor if the circuit is 20a. a #8 cable is no better, as it will have a #10 grounding conductor too. but most 20a breakers will take a #8 directly.

in your related post, you didn't say what type of load this is. if it is a light or heater, voltage drop won't be a big issue. if this is a motor, the current needs are huge at startup and the voltage drop can pose a problem. if this is a motor, knowing if the motor is under much load during startup will answer the voltage drop effect (a saw is easier to start than a compressor).