Calculate the escape velocity for a rocket fire... - WAEC Physics 1989 Question
Calculate the escape velocity for a rocket fired from the earth's surface at a point where the acceleration due to gravity is 10ms-2 and the radius of the earth is 6 x 106m.
A
7.8 x 106ms-12
B
1.1 x 104ms-1
C
3.5 x 107ms-1
D
6.0 x 107 ms-1
correct option: b
Hint: V = √2gr = √(2x10x6x106) + 1.1 x 104ms-1
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