Un esquiador parte del reposo en lo alto de una colina que presenta una inclinacion de 10.5 respecto a la horizontal. La ladera tiene 200m de largo y el coeficiente de friccion entre la nieve y los esquies es de 0.0750. Al pie de la colina la nieve es horizontal y el coeficiente de friccion no cambia. Que distancia recorre el equiador a lo largo de la parte horizontal de la nieve antes de detenerse?

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.

Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency