14-53. The sports car has a mass of 2.3 Mg, and while it is traveling at 28 m/s the driver causes it to accelerate at 5 m/s?. If the drag resistance on the car due to the wind is FD = (0.3v²) N, where v is the velocity in m/s, determine the power supplicd to the engine at this instant. The engine has a running efficiency of e = 0.68. 14-54. The sports car has a mass of 2.3 Mg and accelerates at 6 m/s?, starting from rest. If the drag resistance on the car due to the wind is Fp = (10v) N, where v is the velocity in m/s, determine the power supplied to the engine when 1 = 5 s. The engine has a running efficiency of ɛ = 0.68.

14-53. The sports car has a mass of 2.3 Mg, and while it is traveling at 28 m/s the driver causes it to accelerate at 5 m/s?. If the drag resistance on the car due to the wind is FD = (0.3v²) N, where v is the velocity in m/s, determine the power supplicd to the engine at this instant. The engine has a running efficiency of e = 0.68. 14-54. The sports car has a mass of 2.3 Mg and accelerates at 6 m/s?, starting from rest. If the drag resistance on the car due to the wind is Fp = (10v) N, where v is the velocity in m/s, determine the power supplied to the engine when 1 = 5 s. The engine has a running efficiency of ɛ = 0.68.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 83P: When jogging at 13 km/h on a level surface, a 70-kg man uses energy at a rate of approximately 850...

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