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mljoslinak
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Homework Statement
Two automobiles of 540 and 1400 kg collide head-on while moving at 80km/h in opposite directions. After the collision the automobiles remain locked together. The front end of each automobile crumples by 0.60 m during the collision. Find the acceleration (relative to the ground) of the passenger compartment of each automobile; make the assumption that these accelerations are constant during the collision.
v=80 km/h
m1= 540
m2= 1400
displacement =.6 m
a1= ?
a2= ?
velocity after collision=9.9 m/s
Homework Equations
P=mv
KE=(1/2)mv^2
F=ma
The Attempt at a Solution
I know the momentum is constant--(68800 kg*m/s) and the kinetic energy before and after the collision is--(4.8*10^5 J, 9.4*10^4 J). I think that m1*a1=m2*a2, not too sure about that. After that I am not sure how to calculate the de-acceleration without knowing the impact time.
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