HELP ME ASAP PLEASE
A car with mass 1000kg moving to the right with a velocity of 4m/s hits an 800kg car moving to the left with a velocity of 3m/s. If the second car moves 2m/s to the right. What is the velocity of the first car after the collision?

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation 2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!