Hamden is driving at 25 m/s. He sees cows are slipping across the road. He applies the break to stop his car when cows are 58 m in front of him. If the coefficient of kinetic friction between the car’s locked tires and the road is 0.52, will the car stop before hitting cows? The mass of the car and Hamden together is 1500 kg.

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