The Radius of the Earth Is R $4.9 \mathrm {~m} / \mathrm { s } ^ { 2 } ?$

Multiple Choice

The radius of the earth is R . At what distance above the earth's surface will the acceleration of gravity be $4.9 \mathrm {~m} / \mathrm { s } ^ { 2 } ?$

A) 0.50 R
B) 1.00 R
C) 1.41 R
D) 0.41 R
E) 0.25 R