Impulse Momentum

studied byStudied by 2 people
5.0(1)
Get a hint
Hint

momentum

1 / 15

flashcard set

Earn XP

Description and Tags

16 Terms

1

momentum

p =m*v (kg x m/s)

equal to the mass of the object times the object’s velocity; is a vector

New cards
2

impulse

J = F * △t (N x s)

area under F/t graph

New cards
3

impulse-momentum theorem

only external impulse can change an object’s momentum; J = △p and F * △t = pF-po

New cards
4

Fpeak

point of maximum compression

New cards
5

Favg

= 0.5Fmax

New cards
6

greatest impulse

object bounces back and hurts the most

New cards
7

system of interest; isolated

momentum is conserved in collisions, if and only if, ALL colliding objects are considered to be part of the ________________________ (A+B) and system is ______________ (no external forces are present)

po=pf or △p =0

New cards
8

elastic collision

momentum is conserved; kinetic energy is conserved; objects bounce and there is no damage; examples: billiard balls, bumper cars (greater impulse leads to bounce)

New cards
9

inelastic collision

momentum is conserved; kinetic energy is not conserved; objects bounce, damage or not; examples: any soft ball, real cars

New cards
10

perfectly inelastic collision

momentum is conserved; kinetic energy is not conserved; objects stick, damage or not; examples: clay balls, railroad cars, real cars

New cards
11

equals

if Ko ____ Kf, then the collision was elastic

if po ____ pf, then the collision is possible

New cards
12

does not equal

if Ko ________ Kf, then the collision was inelastic

if po _________ pf, then the collision is not possible

New cards
13

sound energy

kinetic energy can be lost and transferred into __________ because it takes an enormous amount of energy to make sound

New cards
14

explosion

reverse collision

New cards
15

conserved

collision is only possible/elastic when momentum is _____________

New cards
16

compare magnitudes during a head-on collision

bug hits car windshield

FBC = FCB → N3L pair of forces

△tB = △tC → same event

JBC = JCB → J = Ft and N3L

△pB = △pC → J= △p theorem

△VB > △VC → Mc *△vc = △pB = △pC =mb x △VB

ab > ac → definition: a =△V/t

New cards

Explore top notes

note Note
studied byStudied by 12 people
... ago
5.0(1)
note Note
studied byStudied by 24 people
... ago
5.0(1)
note Note
studied byStudied by 20 people
... ago
5.0(1)
note Note
studied byStudied by 13 people
... ago
5.0(1)
note Note
studied byStudied by 295 people
... ago
5.0(11)
note Note
studied byStudied by 17 people
... ago
4.0(1)
note Note
studied byStudied by 123 people
... ago
5.0(2)
note Note
studied byStudied by 606 people
... ago
5.0(2)

Explore top flashcards

flashcards Flashcard (40)
studied byStudied by 3 people
... ago
5.0(1)
flashcards Flashcard (20)
studied byStudied by 6 people
... ago
5.0(1)
flashcards Flashcard (95)
studied byStudied by 9 people
... ago
5.0(2)
flashcards Flashcard (41)
studied byStudied by 15 people
... ago
5.0(1)
flashcards Flashcard (52)
studied byStudied by 12 people
... ago
5.0(1)
flashcards Flashcard (26)
studied byStudied by 5 people
... ago
5.0(1)
flashcards Flashcard (45)
studied byStudied by 1 person
... ago
5.0(1)
flashcards Flashcard (58)
studied byStudied by 32 people
... ago
5.0(6)
robot