If a person travels 15 meters north and then turns right and travels 20 meters east and then turns right and travels 15 meters south, what is the distance the person traveled and what is the displacement

Ineed the answer to question 1 , i’m desperate

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?