Consider a ball rolling around in a circular path on the inner surface of a cone. the weight of the ball is shown by the vector W . There us no friction, so only one other force acts on the ball a normal force. 1.The normal force is greater than the weight and greater than the centripetal force
2.The normal force is greater than the weight and less that the centripetal force
3.The normal force is less than the weight and the greater than the centripetal force
4. The normal force less than the weight and less than the centripetal force.

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.