Newtonian mechanics works for objects with large masses because
1) we have no method of measuring velocities to the accuracy required in quantum mechanics.
2) Planck's constant masks the uncertainties.
3) the uncertainty of the measurements is indistinguishable from zero.
A) 1
B) 2
C) 3
D) 1 and 3
E) 1, 2 and 3

Question

Newtonian mechanics works for objects with large masses because
 1) we have no method of measuring velocities to the accuracy required in quantum mechanics.
2) Planck's constant masks the uncertainties.
3) the uncertainty of the measurements is indistinguishable from zero.
A) 1
B) 2
C) 3
D) 1 and 3
E) 1, 2 and 3

Quizplus · Accepted Answer

The uncertainty of the measurements at the scale of large masses is so small that it becomes indistinguishable from zero, making Newtonian mechanics applicable. Quantum effects, which are significant at very small scales, become negligible for objects with large masses.

Newtonian Mechanics Works for Objects with Large Masses Because