3. Una piedra es lanzada hacia arriba desde lo alto de un edificio, a un ángulo de 30° con la horizontal, y con una rapidez inicial de 20 m/s, como se muestra en la figura.
La altura del edificio es de 45 m.

Determina: El tiempo de vuelo y la distancia horizontal
máxima.

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.