Key chain angle a vehicle enters a circular and level highway exit ramp with a constant speed of v= 70 km/h. at this moment the driver notices that the ignition key chain makes an angle 0 with respect to the vertical. calculate this angle 0 if the radius of the ramp is r=50 m. 0=37.6°

The graph below represents the work done by a student while running up flights of stairs. determine the student's power output after 10 seconds: 1600 j/s 8000 j/s 160 j/s 800 j/s

The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?

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.