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

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

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

A Ball Is Held at a Height H Above a Floor.It