The ends of a magnet where the forces are the strongest are called magnetic

Poles

Explanation:

Each magnet has two poles - North pole and south pole at its end. The magnetic field strength is maximum at the poles. The magnetic field lines exit the magnet from North pole and enter at south pole.

These field lines form closed loops around the magnet. The magnetic field lines are the regions where the magnetic force is exerted by the magnet. This force is strongest at the poles.

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000