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

Ann walks 80 meters on a straight line 33 ∘ north of east starting at point 1. draw ann's path. represent ann's walk with a vector of length 80 meters. draw the vector starting at point 1. the length given in the display is in meters.

Which feature of a heating curve indicates a change ofn state

Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j