What makes a unit rate a unit cost?

First, we'll need to find the definition for "unit cost" and "unit rate"

What is a unit rate?

Rates are usually expressed as a quantity of 1 such as 2 feet per second or 5 miles per hour

The words: miles per hour or feet per hour is a unit rate.

What is a unit cost?

Unit costs are used as a measure of a company's cost to build one unit of a product. This includes fixed costs and variable costs.

In conclusion.

Unit rates and unit costs are almost the same thing. But, they're sometimes used in different ways.

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

if i put something wrong your not gonna like it so rather not say nothing.