A race car travels northward on a straight, level track at a constant speed travels 0.754 km in 25.0 s. The return trip over the same track is made in 30.0 s. (a) What is the average velocity of the car in m/s for the first leg of the run

27.42 m/s

Explanation:

Data provided in the question:

Distance traveled on a straight track = 0.754 km

Time taken to cover while going = 25.0 s

Time taken for the return = 30.0 s

Now,

Total distance covered = 2 × 0.754

= 1.508 Km

= 1508 m

Total time taken = 25 + 30 = 55 s

Therefore,

The average velocity of the car = Total distance ÷ Total time

= 1508 ÷ 55

= 27.42 m/s

1   all nations face the problem of scarcity because there are limited resources and unlimited wants. nations do not have enough factors of production to produce everything that their population wants. entrepreneurial resources initiate businesses to make new goods and services; labor resources produce goods and services.

2 there are four factors of production: natural resources, labor resources, capital resources, and entrepreneurial resources. natural resources are raw materials from nature that are used to produce goods. trees, water, and grains are natural resources. some natural resources, such as wheat and cattle, are renewable

3 wants

things that you do not need to have in order to survive, but would like to have

needs

things that you must have in order to survive

goods

physical products

services

tasks that a business perform for customers

resources

items that people can use to make or obtain what they need or want

determine

to settle or decide by choice of alternatives or possiblities

4 i really dont know