A body is projected from the earth's surface with the intention of letting it escape from the earth's gravitational field. What is the minimum escape velocity of the body? [Earth's radius = 6.4 x 103km, g = 10ms-2]

a

14 kms-1

b

13 kms-1

c

12 kms-1

d

11 kms-1

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Correct Option
d

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Discussions (5)

Deepthinker581
4 years ago

V=√2gr
Where v is escape velocity
Convert the radius of the earth to meter
I.e 6.4×10³km to meter
= 6.4×10³×1000m
g=10ms-²
V=√2×10×6.4×10³×1000
V=√128000000
V=11313.7085ms-¹

MERCYOLADEPO
1 year ago

the formula and solution is not corresponding with the answer??????????

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