A plane designed for vertical takeoff has a mass of 8.0×103 kg. Find the net work done by all forces on the plane as it accelerates upward at 1.0 m/s2 through a distance of 30.0 m after starting from rest.

The best answer is (a) which is universal law is in effect at all times. it is constantly at play in everything we do and governs our lives. it is also important to note that universal law applies to not only everything on earth, but everything in the universe as well, which is another reason why it is in effect at all times.

The magnets are probably damaged or there not strong enough to attached to the refrigerator

This is the answer of your question