WGU C165 Unit 3 Physics Exam Questions and Answers

WGU C165 Unit 3 Physics Exam Questions and Answers Speed - Answer - Distance traveled per unit time Velocity - Answer - Speed in a given direction Acceleration - Answer - rate of change of velocity distance - Answer - How far an object moves Displacement - Answer - the change in position of an object Force - Answer - A push or a pull net force - Answer - The combination of all forces acting on an object Newton's first law of motion - Answer - an object in motion will remain in motion unless acted upon by another force Mass - Answer - the amount of matter in an object Inertia - Answer - the tendency to keep the same motion Newton's Second Law of Motion - Answer - The acceleration produced by the net force on an object is proportional to the net force, and inversely proportional to the mass Newton's Third Law of Motion - Answer - For every action there is an equal and opposite reaction. States that whenever one object exerts a force on a second object, the second object exerts a force of the same magnitude in the opposite direction on the firs t object. Friction - Answer - A force that opposes motion between two surfaces that are in contact Gravity - Answer - A force that pulls objects toward each other Gravitational Force - Answer - a force that attracts any objects with mass