If an object is at rest can we conclude that no external forces are acting on it. true or false

Abaseball is thrown a distance of 20 meters. what is its speed if it takes 0.5 seconds to cover the distance

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

Is the time in tennessee the same as florida