An airplane flying with a horizontal initial velocity of 80 m/s drops a package down to the ground. The plane is initially 490 meters above the ground. How long does it take the package to hit the ground?

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!