What happens as a compass needle moves along earth's surface?

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.