Determine the momentum of a 40kg rock that is travelling at 13m/s? I know it’s 520kg•m/s I just need the work please help

Find the mass by adding the numbers from the three sliders

What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false