Inelastic collision and velocity of car

AI Thread Summary
In a completely inelastic collision involving a 2000 kg car traveling west at 75 km/h and a 1000 kg motorcycle traveling south at 108 km/h, the vehicles stick together after the collision. Momentum conservation must be applied in both the north/south and east/west directions. To find the final velocity, set the total initial momentum equal to the total final momentum for each direction. Input the known masses and velocities into the momentum equations to solve for the combined velocity after the collision. This approach will yield the correct final velocity of the vehicles post-collision.
eshock202
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Homework Statement



2000 kg car traveling west at 75 km/h and a motorcycle traveling south at 108 km/h weighing 1000kg. assuming the collision is completely inelastic, what is the velocity of the vehicles after the collision.

Homework Equations



I know that the Pi, system = Pf, system.

The Attempt at a Solution


I am just confused of where to start. Any pointers into the correct direction would be greatly appreciated.
 
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"Completely inelastic" means they stick together.
Momentum is conserved in both the north/south direction and the east/west direction. You must write
momentum before = momentum after
for both directions, put in an mv for each moving object before and after.
Put in the known numbers and you will be able to work out the velocity after the collision in each direction.
 

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