Trinity throws a ball upwards with a speed of 5 m/s and then catches the ball. a) How long until the ball reaches the top of its path?
b) How high does the ball travel to the top of its path?
c) What is the total distance the ball travels?
Can someone tell me how to solve?

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?