Which of these is true about a bar magnet?
its north pole tends to point south.
its poles can be separated into two isolated poles.
its poles attract or repel because of their net electric charge.
it attracts unmagnetized iron objects by making them magnetically polarized.

The velocity of a curling stone is due east. what will be the direction of the momentum of the curling stone as it moves?

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.