A melon is projected into the air with 100 J of kinetic energy in the presence of air resistance. When it returns to its initial level its kinetic energy is
A. less than 100 J.
B. more than 100 J.
C. 100 J.
D. need more information
Answer:A
A melon is projected into the air with 100 J of kinetic energy in the presence of air resistance. When it returns to its initial level its kinetic energy is
A. less than 100 J. B. more than 100 J. C. 100 J. D. need more information