a young child moves an object 6m in 30 seconds, generating 2 watts of power. How much work did the child do

What statements accurately describe atoms

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

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.