a 7.00 kg cannonball is travelling at a velocity of 75.0 m/s at a height of 80.0 m. what is its kinetic energy?
A) 39,400 J
B) 19,700 J
C) 5500 J
D) 525 J
2 answers
as always, K = 1/2 mv^2
Answer is 19,700 J