how would u implement kinetic friction and springs into a momentum question?(adsbygoogle = window.adsbygoogle || []).push({});

None of the questions in my textbook shows a momentum+friction/springs question

lets say

Car A (350 kg) is traveling 60 m/s east and car B (400 kg) is traveling 30 m/s west. The collision is completely elastic. The coefficient of kinetic friction on the road is 0.45 (assume its not rolling friction). The cars make an eventual stop. What is the total distance traveled by cars A and B after the collision. And lets say part 2 is what if the collision was inelastic, what would the answer then be?

and lets have another question.

A 1 kg cart is moving 4 m/s east and then runs into a spring on the side of a wall. The spring's constant is 1000 N/m. the spring gets compressed 0.6 m. The cart gets pushed back west and hits a 0.5 kg cart at rest. What is the velocity of the cart that was still if it was an elastic collision? And what would the velocity be if it was an inelastic collision

i just make up the problems

well for elastic collisions since energy is conserved

i just assumed you first do

m1v1i + m2v2i = m1v1f + m2v2f and

Wnc + KEit = KEft

(non conservative work + total initial kinetic energy) = final kinetic energy

but i have no clue how to do one that is inelastic

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# How would you solve a momentum problem including friction and/or springs?

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