Physics Final (2a): MOMENTUM & IMPULSE

Question 1

Momentum (p) (p=mv)

Answer 1

a quality of moving objects.

the equation p=mv measures momentum (p) by multiplying the (m)ass of the object in motion by the (v)elocity of that object.

Question 2

Impulse (F*t)

Answer 2

a change in momentum, a force acting on an object for a certain time.

the equation F * t = (F)orce multiplied by (t)ime.

also, change in momentum = mv of one object minus mv of another object

Question 3

Momentum Impulse Theorem

Answer 3

the impulse something feels causes a change in momentum

Question 4

Law of Conservation of Momentum

Answer 4

in the absence of an external force, the momentum of a system remains unchanged (pf=pi)

Question 5

Elastic Collisions

Answer 5

occurs when colliding objects rebound without lasting deformation or any generation of heat

Question 6

Inelastic Collisions

Answer 6

occurs when colliding objects result in deformation and/or the generation of heat

Question 7

Explosion Collisions

Answer 7

a reverse inelastic collision, where the system starts with no motion, and then energy is transferred to kinetic energy