Please help me A school bus moves at speed of 35 mi/hr for 20 miles how long will it take the bus to get to school

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

If y gets smaller as x gets bigger and y have an relationship?

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,?