Aun automóvil de 15680 que se mueve a una velocidad de 20 m / s se le aplica una fuerza de 6,4 · 10 2n hasta que se detiene. a. ¿cuál es la masa del auto? b. ¿cuál era su cantidad de movimiento ( momento) inicial? ç c. ¿cuál fue el cambio en momento del auto? d. ¿cuánto tiempo se aplicó la fuerza? sol: a)1,6·103kg b)3,2·104 kgm/s c)3,2·104 kgm/s d)50s

Acube has a volume of 2011 cubic inches. what is the angle measure between a side of a cube and its interior diagonal?

Athin plate moves between two parallel, horizontal, stationary flat surfaces at a constant velocity of v = 7.5 m/s. the two stationary surfaces are spaced 4 cm apart, and the medium between them is filled with oil whose viscosity is 0.9 n·s/m2. the part of the plate immersed in oil at any given time is 2 m long and 0.5 m wide. if the plate moves through the mid-plane between the surfaces, determine the force required to maintain this motion. what would your response be if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top surface (h1)? if the plate moves through the mid-plane between the surfaces, the force required to maintain the motion will be n. if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top (h1) surface, the force required to maintain the motion would be n.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?