Potential Kinetic Energy Worksheet
12. In a lab investigation, one group of students (group A) measures the speed of a 0.1kilogram 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 onemeter high.
(a). What is the potential energy of the car at the beginning of the experiment before its speed is measured?
(b). Calculate the kinetic energy of the car for group A using the speed (2.5 m/sec) and mass values above.
(c). Calculate the kinetic energy of the car for group B using the speed (3.0 m/sec) and mass values above.
(d). At the bottom of a hill, the kinetic energy of the cars should be equal to the potential energy of the car atthe top of the hill. Are the kinetic energy values for groups A and B equal to, less than, or greater tha he potential energy value?
