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11 November, 07:22

The kinetic energy (in joules) of a moving object can be calculated from the expression 1/2mv^2, where m is the mass of the object in kilograms and v is its speed in meters per second. Find the kinetic energy of a 0.145 - kg baseball that is thrown at a speed of 40 meters per second. E = ? Joules

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  1. 11 November, 07:23
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    1/2*0.145*40²

    1/2*0.145*1600

    1/2*232

    232/2

    116 Joules
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