A ball is held at a height H above a floor. It is then released and falls to the floor. If air resistance can be ignored, which of the five graphs below correctly gives the mechanical energy E of the Earth-ball system as a function of the altitude y of the ball?
A) I
B) II
C) III
D) IV
E) V

Question

A ball is held at a height H above a floor. It is then released and falls to the floor. If air resistance can be ignored, which of the five graphs below correctly gives the mechanical energy E of the Earth-ball system as a function of the altitude y of the ball? 
A) I 
B) II 
C) III 
D) IV 
E) V

Quizplus · Accepted Answer

The Answer of A ball is held at a height H above a floor. It is then released and falls to the floor. If air resistance can be ignored, which of the five graphs below correctly gives the mechanical energy E of the Earth-ball system as a function of the altitude y of the ball? 
A) I 
B) II 
C) III 
D) IV 
E) V

A Ball Is Held at a Height H Above a Floor