A squirrel drops an acorn onto the head of an unsuspecting dog. The acorn falls 4.0 meters before it lands on the dog. We can ignore air resistance. How many seconds did the acorn fall?

Aphysical change is a change in the size, shape,, or stafe of matter true or false

(1 point) match the differential equations and their vector valued function solutions. you may wish to multiply at least one solution out fully, to make sure that you know how to do it. you can get the other answers quickly by process of elimination and just multiply out one row element.

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87