A railroad handcar is moving along straight, frictionless tracks with negligible air resistance. In the following cases, the car initially has a total mass (car and contents) of 160 kg and is traveling east with a velocity of magnitude 5.50 m/s. Find the final velocity of the car in each case, assuming that the handcar does not leave the tracks.

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?

What is the role of the water cycle in maintaining freshwater levels in lake and rivers?

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.