In an experiment, one group of students (A) measures the speed of a 0.1 kg car at 2.5 m/s at the
bottom of a hill, while another group of students (B) measures the speed of the car at 3 m/s. The hill is 1 m high.
a. What is the PE of the car at the beginning of the experiment?
b. What is group A's KE (velocity 2.5 m/s)?
c. What is group B's KE (velocity 3.0 m/s)?
d. Which group was correct? (KE=PE)