A car travelling at a speed of 60 km/h has a kinetic energy of 200 kJ. If the speed of the car is increased to 120 km/h, the kinetic energy of the car will be O a. 800 kJ O b. 200 kJ 100 kJ O d. 400 kJ

A car travelling at a speed of 60 km/h has a kinetic energy of 200 kJ. If the speed of the car is increased to 120 km/h, the kinetic energy of the car will be O a. 800 kJ O b. 200 kJ 100 kJ O d. 400 kJ

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 43A

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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 car travelling at a speed of 60 km/h has a kinetic energy of 200 kJ. If the speed of the car is increased to 120 km/h, the kinetic energy of the car will be
800 kJ
O
b. 200 kJ
100KJ
400kJ

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