Conceptual Physics Momentum Exam

Conceptual Physics Momentum Exam Momentum - Answer-The product of the mass of an object and its velocity. Momentum = mass × velocity Momentum is... - Answer-a property of moving things. By momentum we mean... - Answer-Inertia in motion. Momentum in shorthand: - Answer-Momentum→Ρ =mv When direction is not an important factor, we can say: - Answer-Momentum = mass × velocity What is especially important when dealing with momentum? - Answer-Timing The quantity force × time interval is called: - Answer-Impulse Impulse - Answer-The product of the force acting on an object and the time during which it acts. Relationship of impulse and momentum - Answer-Impulse is equal to the change in momentum of the object that the impulse acts upon. In symbol notation, Ft = I Law of conservation of momentum - Answer-In the absence of an external force, the momentum of a system remains unchanged. Hence, the momentum before an event involving only internal forces is equal to the momentum after the event: *mv (before event) = mv (after event) Elastic collision - Answer-A collision in which colliding objects rebound without lasting deformation or the generation of heat. Inelastic collision - Answer-A collision in which the colliding objects become distorted, generate heat, and possibly stick together. Impulse = - Answer-Force x time The delta symbol: ∆ - Answer-a letter in the Greek alphabet used to denote "change in" or "difference in" FT= I