Asteroid Ida was photographed by the Galileo spacecraft in 1993 , and the photograph revealed that the asteroid has a small moon, which has been named Dactyl. From the dimensions of Ida and its general features, one can estimate the mass of Ida to be $4.5 \times 10 ^ { 16 } \mathrm {~kg}$ , and the distance between Dactyl and Ida is approximately 90 \mathrm{~km} . Assuming a circular orbit, what would be the orbital speed of Dactyl? $\left( G = 6.67 \times 10 ^ { - 11 } \mathrm {~N} \cdot \mathrm { m } ^ { 2 } / \mathrm { kg } ^ { 2 } \right)$

Question

Asteroid Ida was photographed by the Galileo spacecraft in 1993 , and the photograph revealed that the asteroid has a small moon, which has been named Dactyl. From the dimensions of Ida and its general features, one can estimate the mass of Ida to be $4.5 \times 10 ^ { 16 } \mathrm {~kg}$ , and the distance between Dactyl and Ida is approximately  90 \mathrm{~km} . Assuming a circular orbit, what would be the orbital speed of Dactyl? $\left( G = 6.67 \times 10 ^ { - 11 } \mathrm {~N} \cdot \mathrm { m } ^ { 2 } / \mathrm { kg } ^ { 2 } \right)$

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The Answer of Asteroid Ida was photographed by the Galileo spacecraft in 1993 , and the photograph revealed that the asteroid has a small moon, which has been named Dactyl. From the dimensions of Ida and its general features, one can estimate the mass of Ida to be $4.5 \times 10 ^ { 16 } \mathrm {~kg}$ , and the distance between Dactyl and Ida is approximately  90 \mathrm{~km} . Assuming a circular orbit, what would be the orbital speed of Dactyl? $\left( G = 6.67 \times 10 ^ { - 11 } \mathrm {~N} \cdot \mathrm { m } ^ { 2 } / \mathrm { kg } ^ { 2 } \right)$

Asteroid Ida Was Photographed by the Galileo Spacecraft in 1993 4.5×1016 kg4.5 \times 10 ^ { 16 } \mathrm {~kg}4.5×1016 kg

Asteroid Ida Was Photographed by the Galileo Spacecraft in 1993 $4.5 \times 10 ^ { 16 } \mathrm {~kg}$