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Physics 8 Online
kyraketen2:

A car covers 72 kilometers in the first hour of its journey. In the next hour, it covers 90 kilometers. What is the amount of work done by the car? The total mass of the car, including its passengers, is 2.5 × 103 kilograms.

SmokeyBrown:

Hi, and welcome to QuestionCove! This is a question involving calculating work, which we can find by taking the force exerted multiplied by the displacement over which the force was exerted. The displacement part is simple to calculate, since we are told how much distance the car travels. As for the force exerted by the car, we know the mass of the car... any idea how we can calculate force based on that information?

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