Se lanza una piedra hacia abajo con una rapidez inicial de 8.0 m/s desde una altura de 25 m. Calcula a)la velocidad con la que golpea el suelo y b) el tiempo que tarda en llegar al suelo.

Aplane takes off from an airport and flies to town a, located d1 = 215 km from the airport in the direction 20.0° north of east. the plane then flies to town b, located d2 = 230 km at 30.0° west of north from town a. use graphical methods to determine the distance and direction from town b to the airport. (enter the distance in km and the direction in degrees south of west.)

Abanked road comer of radius 146 m is to be constructed. if the comer is designed for vehicles moving with a speed of 20.0 m/s, what should the banking angle be, in units of degrees?

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c