Physical Final Assessment
Question / AnswerNot an example of fluid friction? / sugar
What is the value of gravitational acceleration? / 9.8 m/s/s
What determines how difficult it is to stop an object? / momentum
What is used for a comparison when motion is described? / frame of reference
Energy of motion is called what? / kinetic
Energy is the ability to do ______. / work
Energy is measured in? / joules
The velocity of an object changes if / either its speed or its direction changes
Speed in a given direction is / velocity
A negative acceleration is called / deceleration
Speed that does not change is called / constant speed
Even when slowly moving a train cannot stop suddenly because of its / large momentum
The Law of Conservation of Momentum states that energy / cannot be lost or gained
Force is necessary to / change direction / stop or start and object