Answered: A 2000 Kg car is moving at 54 km/hr…

A 2000 Kg car is moving at 54 km/hr behind a truck. In order to pass the track, the car changes its speed to 72km/hr in 5 sec. What engine power is developed during this time ? A. 15KW

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter11: Energy And Its Conservation

Section: Chapter Questions

Problem 47A

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Concept explainers

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.

Question

A 2000 Kg car is moving at 54 km/hr behind a truck. In order to pass the track, the car changes its speed to 72km/hr in 5 sec. What engine power is
developed during this time ?
A. 15KW

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