Se lanza una bola verticalmente hacia arriba y alcanza una altura máxima de 21,4 m. A. Calcula la rapidez con la que se lanza la bola. B. Explica ¿qué supuestos has tenido en cuenta? C. Determina ¿dónde estará la bola al cabo de 3,05 s de su lanzamiento? D. Calcula ¿cuál será su velocidad en ese momento?

Which surface feature of the moon is characterized by mountainous areas? terrae craters maria regolith

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?