Ребёнок массой 20 кг, скатившись с горы на санках, проехал по горизонтальной поверхности до остановки 15 м за 10 с. Чему равен коэффициент

Sunday is the FIRST day of the week. Monday is the second day of the week.
Tuesday is the third day of the week.
Wednesday is the fourth day of the week.
Thursday is the fifth day of the week.
Friday is the sixth day of the week.
Saturday is the seventh day of the week.

1- I'd like to have a birthday today.
2- What would you like to have for your birthday?
3- I d like to have a scooter and a lot of sweets.
4- Oh, I can you a sweet. Here you are.
5- It s great. Thank you.