A pen is dropped from a height H. When it reaches the ground, its velocity is\[50\text{ }m/s\]. The value of H is\[\left( g=9.8\,m/{{s}^{2}} \right)\]:

A pen is dropped from a height H. When it reaches the ground, its velo

1.	A pen is dropped from a height H. When it reaches the ground, its velocity is\[50\text{ }m/s\]. The value of H is\[\left( g=9.8\,m/{{s}^{2}} \right)\]:
A.	55 m
B.	127.5 m
C.	105 m
D.	120 m
E.	None of these
Answer» C. 105 m

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A pen is dropped from a height H. When it reaches the ground, its velocity is\[50\text{ }m/s\]. The value of H is\[\left( g=9.8\,m/{{s}^{2}} \right)\]:

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