Thursday, March 15, 2012

1.22

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1.22

Tuesday, July 06, 2010

3:04 PM
· 1.22 use the conservation of momentum to calculate the mass, velocity or momentum of objects

Momentum conserved in collisions


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and 1.20 animation

Momentum conserved in explosions


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Example - Pearson, p.41

[cid:image001.jpg@01CD0351.148D95F0]

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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Image001

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