Una masa de 10,0 kg se mueve hacia arriba en un plano inclinado con una fuerza de 99,9 N. Si el coeficiente de fricción cinético es de 0,400, ¿Cuál es el trabajo realizado por la fuerza de fricción cinética si la masa se desplaza 15,0 metros hacia arriba?
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An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.