Um corpo é lançado verticalmente para cima a partir da superfície da Terra e atinge a altura de 80 metros. A gravidade na superfície da Terra é de10m/g² e são desprezados os efeitos de altitude e da resistência do ar. A velocidade de lançamento é: a) ( ) 60 m/s

b) ( ) 25 m/s

c) ( ) 80 m/s

d) ( ) 40 m/s

e) ( ) 30 m/s

The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.

When you see distant streetlights through smog, they look dimmer and redder than they do normally. but when you see the same streetlights through fog or falling snow, they look dimmer but not redder. use your knowledge of the interstellar medium to discuss the relative sizes of the particles in smog, fog, and snowstorms compared to the wavelength of light.

If a nissan titan has a mass of 2,300 kilograms how many grams is that