In summary: I'm sorry, I meant to say -\mu mg = ma. And those equations are just derived from the second law, F=ma, and the definitions of friction and acceleration. And the point is that the acceleration is independent of the mass. It is only dependent on the force applied, which in this case is the frictional force -\mu mg. Increasing the mass does not change the acceleration, it only changes the force required to achieve that acceleration.In summary, when a truck's mass doubles, the truck's skidding distance in terms of x will still be x/4, and if the truck's initial velocity is halved, the skidding distance will also be x/4. This is because the acceleration,
#36
tmoan
39
0
no no ur wrong f1 = ma
f2 = 2ma
f1 is not equal to f2