A 1200-kg car, C, traveling south at 25 m/s collides and locks with a 1800-kg car, D, traveling west at 30.0 m/s. At what speed do the cars move after the collision? Show your work.

Speed of two cars is 20.6 m/s

Explanation:

As we know that there is no external force on the system of two cars

So momentum of the system will remain conserved before and after collision

So we will have

here we know

towards west

so we have

now if finally two cars locked and moved together

so speed of two cars is given as

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered

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