A rocket is launched from the surface of the earth. If the radius of the earth is 6.4 x 106m and the acceleration of free fall due to gravity is 1Oms-1 calculate the escape velocity of the rocket.

A rocket is launched from the surface of the earth. If the radius of the earth is 6.4 x 10⁶m and the acceleration of free fall due to gravity is 1Oms^-1 calculate the escape velocity of the rocket.

A 2.53 x 10⁴ms^-1
B 1.13 x 10⁴ms
C 8.00 x 10³ms^-1
D 4.23 x 10³ms^-1
E 6.41 x 10⁴ms^-1

waec 1996 physics

The correct answer is B. 1.13 x 10⁴ms

V = â2gR

V = â2 x 10 x 6.4 x 10²

1.13 x 10⁴ms

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