Predict which will fall to the ground faster accomplish and paper or flat sheet paper

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

Hydrogen and helium are both members of?

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.