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An object is dropped from rest from a height 5.6 × 106 m above the surface of the earth. If there is no air resistance, what is its speed when it strikes the earth? The acceleration of gravity is 9.81 m/s 2 and the radius of the Earth is 6.37 × 106 m. Answer in units of km/s.

Respuesta :

joseaaronlara

Answer:

The answer to your question is:  10.48 km/s

Explanation:

Data

h = 5.6 x 10⁶ m

g = 9.8 m/s²

Formula

                 vf = [tex]\sqrt{2gh}[/tex]

Substitution

                vf = [tex]\sqrt{2(5.6 x 10^{6}) (9.81)}[/tex]

                vf = [tex]\sqrt{109760000}[/tex]

                vf = 10476.64 m/s

convert to km/s

               vf = 10476.64/1000

               vf = 10.48 km/s

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