Desde una ventana de un edificio situada a 20 m del suelo se lanza una pelota con una velocidad de 15 m/s formando un ángulo de 600

con la horizontal. Determinar:

a) ¿Cuál es la altura máxima alcanzada?
b) calcular el tiempo en alcanzar el suelo y el alcance

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)

A55-kg pilot flies a jet trainer in a half vertical loop of 1200-m radius so that the speed of the trainer decreases at a constant rate. knowing that the plane has a speed of 550 km/h at point a, and the pilot experiences weightlessness at point c (i.e., the normal force from the seat bottom is zero), determine (a) the deceleration of the plane, (b) the force exerted on her by the seat of the trainer when the trainer is at point b.