Which statement explains how brakes slow down a car
answer
a they apply an angular acceleration in the direction of motion.
b they apply a torque in the direction of motion
c they apply an angular acceleration opposite the direction of motion
d they apply a torque opposite the direction of motion

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