This question is typical on some driver's license exams: A car moving at 43 km/h skids 14 m with locked brakes. How far will the car skid with locked brakes at 107.5 km/h ? Assume that energy loss is due only to sliding friction . Answer in units of m .

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

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.

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?