Plz help 1 : Give an example of motion in which acceleration of an object is against direction of motion
2 : Define uniform acceleration . What is the acceleration of body moving with uniform velocity ?
3 : How long will it take for a body accelerating by 2 m/s^2 to gain a velocity of 10 m/s starting from rest .

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.