Physics Momentum “Bucket” Model - thecubscientist.com
Physics Momentum “Bucket” Model - thecubscientist.com
Physics Momentum “Bucket” Model - thecubscientist.com
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PART C:<br />
1. Statement of Conservation of <strong>Momentum</strong><br />
pi = pf<br />
2. State positive direction<br />
Positive direction is to the right<br />
+<br />
3. Draw <strong>Momentum</strong> Buckets<br />
+ =<br />
pTrain1<br />
pTrain1+ Train1<br />
4. Write Conservation of <strong>Momentum</strong> equation<br />
5. Solve<br />
m1v1i = (m1+m2)vf<br />
v<br />
2 f<br />
m v<br />
( 1000)( 20)<br />
= 1 1i<br />
= =<br />
m<br />
+ m (1000 + 2500)<br />
1 2<br />
5.71[ m / s]<br />
The positive answer implies the Train 1+2 travel in the positive direction, that is, to<br />
the right.<br />
Page 8<br />
<strong>Physics</strong> | Loyola High School
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