2 A certain automobile has a mass of 1200kg. a. How much work is required to increase the speed the automobile from 10km/hr to 30km/hr? b. How much work is required to increase the speed the automobile from 30km/hr to 50km/hr? c. From what height must the car be dropped to give it the same kinetic energy just before impact that it has when traveling at 100km/hr?
2 A certain automobile has a mass of 1200kg. a. How much work is required to increase the speed the automobile from 10km/hr to 30km/hr? b. How much work is required to increase the speed the automobile from 30km/hr to 50km/hr? c. From what height must the car be dropped to give it the same kinetic energy just before impact that it has when traveling at 100km/hr?
Chapter3: Energy And Conservation Laws
Section: Chapter Questions
Problem 20P: . In compressing the spring in a toy dart gun, 0.5J of work is done. When the gun is fired, the...
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