- #1

maxdaddy

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## Homework Statement

A 2000kg car moving east at 10 m/s collides with a 3000kg car moving north. They stick together and move as a unit after the collision, at an angle of 40 degrees north of east and at a speed of 5.22 m/s. Find the speed of the 3000kg car

**before**

**the collision.**

Pi=Pf

mivi + mivi= mfvf + mfvf

I tried plugging the numbers in the above equation but it did not work. The textbook gives the answer of 5.59 m/s and I cannot figure it out. Somebody give me some help please.## Homework Equations

Pi=Pf

mivi + mivi= mfvf + mfvf

## The Attempt at a Solution

I tried plugging the numbers in the above equation but it did not work. The textbook gives the answer of 5.59 m/s and I cannot figure it out. Somebody give me some help please.