As a 2.0-kg object moves from 
m to 
m, the constant resultant force acting on it is equal to 
align="middle" /> N. If the speed of the object at the initial position is 4.0 m/s, what is its kinetic energy at its final position?
A. 62 J
B. 53 J
C. 73 J
D. 86 J
E. 24 J
Answer: B
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