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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

A 65.0-kg runner has a speed of 5.20 m/s at one instant during a long-distance event. (a) What is the runner’s kinetic energy at this instant? (b) How much net work is required to double his speed?

(a)

To determine
The kinetic energy of the runner.

Explanation

Given Info:

The mass of runner is 65.0kg .

The speed of the runner is 5.20m/s .

Formula to calculate the kinetic energy of the bowling ball is,

KEi=12mv2

  • v is the speed of the runner
  • m is the mass of the runner

Substitute 65.0kg for m and 5

(b)

To determine
The net work done require to double the runner’s speed.

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