Aballoon drifts 140m toward the west in 45s ; then the wind suddenly changes and the balloon flies 90m toward the east in the next 25s. what distance did it travel during the first 45s?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 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

If y gets smaller as x gets bigger and y have an relationship?

What does si stand for,when referring to a system of measurement