momentum

Question 1

momentum

Answer 1

the product of mass and velocity
vector quantity
has magnitude and direction
greater mass / velocity = more momentum

Question 2

momentum formula

Answer 2

momentum (kgm/s) = mass(kg) x velocity (m/s)

Question 3

conservation of momentum

Answer 3

total momentum before event = total momentum after event

in closed system

Question 4

closed system

Answer 4

something not effected by external forces

momentum conserved in collisions + explosions

Question 5

cannon ball and cannon example

Answer 5

when cannon fired 
cannon ball gains forward momentum 
cannon gains backwards momentum 
before event momentum=0
no objects moves 
after event momentum = 0
with cannon and cannon ball moving in opposite directions

Question 6

ball example

Answer 6

ball a and ball b will collide
before event = ball b is stationary so momentum =0
white ball has momentum and moves in a positive direction and hits red ball causing red ball to have momentum
white balls continue moving with small momentum and velocity
combined momentum of white and red ball = white og momentum

Question 7

force and momentum

Answer 7

force causes change in momentum

when a non zero resultant force acts on object there is a change in velocity causes a change in momentum

Question 8

calculating rate of momentum change

Answer 8

force = change in momentum/ time

force involved = rate of change