main

prev        

Statement of a problem № 10349

        next    

A 1400-kg automobile starts from rest and travels 400 m during a performance test. The motion of the automobile is defined by the relation x = 4000ln(cosh 0.03t) where x and t are expressed in meters and seconds, respectively. The magnitude of the aerodynamic drag is D = 0.35v2, where D and v are expressed in newtons and m/s, respectively. Determine the power dissipated by the aerodynamic drag when (a) t = 10 s (b) t = 15 s




New search. (Also 5349 free access solutions)