1.

A particle is taken to a height R above the earths surface, where R is the radius of the earth. The acceleration due to gravity there is

A.  \[2.45\text{ }m/{{s}^{2}}\]         
B.  \[4.9\text{ }m/{{s}^{2}}\]
C.  \[9.8\text{ }m/{{s}^{2}}\]           
D.  \[19.6\text{ }m/{{s}^{2}}\]
Answer» B.  \[4.9\text{ }m/{{s}^{2}}\]


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