In a lab investigation, one group of students (group A) measures the speed of a 0.1-kilogram car at 2.5 m/sec at the bottom of a hill. Another group of students (group B) measures the speed of the car at 3 m/sec at the
bottom of the hill. The car's starting position at the top of the hill is one-meter high.
a. What is the potential energy of the car at the beginning of the experiment before its speed is measured?
KE=mgh