An athlete from your school's cross country team goes for a training run. She runs 3.6 km east, 4.5 km north, then another 2.4 km east. At the
end of her run, how far is the athlete from her starting position?
(remember, you can rearrange the vectors to make a right triangle and
use Pythagorean Theorem).
2.4 km
4.5 km
- 3.6 km

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.