1. A marble rolls along the track below with no friction. The sequence of positions

on the track listed in order from the lowest kinetic energy to the highest kinetic

energy is: *

O

A. 1,5, 4, 3, 6:2

O

B. 1,2,3,4,5,6

O

C. 1,5, 4, 2, 3, 6

D none of the above

pls hurry

Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?

You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. naturally, you remove it to a safer place. but before you do, you observe it as it moves from position xi = -92.9 cm to position xf = -64.9 cm along the rail, as measured from a point where one rail abuts the next. what is the snail\'s displacement δx in centimeters?

If the speed of a particle triples ,by what factor does its kinetic energy increase?