Luna traveled 340 km at an average speed of 78 km/h. Ron took 1.4 hours more to go the same distance. What was Ron’s average speed for the whole trip? Show your work.

An electric current in a wire will push or pull on a permanent magnet. which statement best explains how an electric current creates an electromagnetic force on another magnet?

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration