· 1.22 use the conservation of momentum to calculate the mass, velocity or momentum of objects 
Momentum conserved in collisions
· http://www.youtube.com/watch?v=b6QzJSUKzQM
· and http://www.walter-fendt.de/ph14e/collision.htm
Momentum conserved in explosions
Example - Pearson, p.41
Consider final momentum
Truck, plasticine and pellet
p = m x v
p = (0.1+0.002) x 0.8
p = 0.0816kgm/s
total final momentum = pf = 0.0816kgm/s
Principle of Conservation of Momentum tells us:
total initial momentum = total final momentum
Σpi = Σpf
so total initial momentum = pi = 0.0816kgm/s
Consider initial momentum
Truck and plasticine
p = m x v
p = 0.1 x 0
p = 0kgm/s
Pellet
p = m x v
0.0816 = 0.002 x v
v = 40.8m/s
1.22 animation
14 March 2012
15:49
Website:
http://www.walter-fendt.de/ph14e/collision.htm
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