Question

The orbital speed of Jupiter is

• A. Greater than the orbital speed of earth
• B. Less than the orbital speed of earth
• C. Equal to the orbital speed of earth
• D. Zero

Answer 1

Answer: (B)

Less than the orbital speed of earth

Answer 2

Orbital radius of Jupiter > Orbital radius of Earth

$\frac { v _ { J } } { v _ { e } } = \frac { r _ { e } } { r _ { J } }$. As $r _ { J } > r _ { e }$ therefore $v _ { J } < v _ { e }$