4. A 25.0-kg child is running down a hill with a velocity of 6.50 m/s. What is her
momentum?

Working with si (metric) units for each of the following commonly used measurements, indicate its symbol. liter gram milliliter kilogram meter centigram milligram centimeter kilometer second millimeter milliseconds

Need on both questionswill markbr />

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins