Which characteristic should a good scientific question have?
it should lead to a hypothesis that is testable.
it should have an answer that is already known.
it should not be answerable just through investigation.
it should include many variables about a wide range of topics.

What is the measure of a change in an objects velocity?

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.

Which of the following compounds would be primarily ionic? methane, ch4, ammonia nh3, calcium chloride, cacl2, or carbon dioxide, co2