A2 kg cart going 1 m/s to the right crashes into a 2 kg cart going 1 m/s in the opposite direction (to the left). What is the total momentum of the system before and after the colision?
Okg m/s
4 kg m/s
4J
2 kg m/s

Calculate the minimum energy required to remove one proton from the nucleus 126c. this is called the proton-removal energy. (hint: find the difference between the mass of a 126c nucleus and the mass of a proton plus the mass of the nucleus formed when a proton is removed from 126c.) express your answer with the appropriate units. emin e m i n = nothing nothing request answer part b how does the proton-removal energy for 126c compare to the binding energy per nucleon for 126c, calculated using eb=(zmh+nmn−azm)c2?