4. Momentum & Collisions

Question 1

what is momentum

is it vector/scalar

Answer 1

vector

measurement of moving objects tendency to continue along its present path

Question 2

what does a high momentum correspond to in terms of changing objects path

Answer 2

increased difficulty in changing its path

Question 3

what is the equation for momentum

Answer 3

M = mass x velocity

Question 4

what is the unit for momentum

Answer 4

kgm/s

Question 5

what happens to the momentum of an isolated system

Answer 5

always conserved

Question 6

what are 2 types of collisions

Answer 6

elastic and non-elastic

Question 7

what 2 things are conserved in elastic collisions

Answer 7

momentum and kinetic energy

Question 8

what happens to objects that collide in elastic collisions

Answer 8

objects bounce off each other

Question 9

what happens to momentum and kinetic energy in inelastic collisions

Answer 9

momentum conserved

kinetic energy is lost as heat/sound

Question 10

what happens to objects that collide in inelastic collisions

Answer 10

objects stick together upon collision

Question 11

what is the equation involving collision of isolated objects in inelastic collisions

Answer 11

m1v1i + m2v2i = m1v1f + m2v2f