The figures below show bird\'s-eye views of six automobile crashes an instant be

Question

The figures below show bird's-eye views of six automobile crashes an instant before they occur. The automobiles have different masses and incoming velocities as shown. After impact, the automobiles remain joined together and skid to rest in the direction shown by vfinal . Rank these crashes according to the angle , measured counterclockwise as shown, at which the wreckage initially skids.

Rank from largest to smallest. To rank items as equivalent, overlap them.

Label 1 2 3 4 5 6 from left to right

Explanation / Answer

use P=mv
P=momentum
v=velocity
m=mass

find the x and y component for each.
ex. pic #1
15*1000=15000 in x direction
15*1000=15000 in y direction

find the resultant
tan(x)=15000/15000
take inverse tan of 1and get 45 degrees

rankings largest to smallest (using the picture number for this)
3=55.00 degrees
5,6,1=45.00 degrees
4=44.193 degrees
2=34.99 degrees

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