Macarena sabe que un año en Marte equivale a 687 días terrestres, pero quiere conocer cuál es su radio orbital. Si ella considera que la órbita de Marte es aproximadamente circunferencial, ¿Qué valor obtendrá
aproximado para el radio orbital al aplicar la tercera ley de Kepler?

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.