document.write( "Question 1191286: https://ibb.co/CKY3w53 \n" ); document.write( "

Algebra.Com's Answer #823097 by ikleyn(52787) $\"\"$ $\"About$

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document.write( "Kinetic energy at the bottom position is equal to the potential energy at the starting position.\r\n" );
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document.write( "This potential energy is  m*g*(1.50-0.80) = 0.5*10*0.7 = 3.5 kg*(m/s^2)*m = 3.5 joules.\r\n" );
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document.write( "Here 0.5 is the mass of 500 grams, expressed in kilograms;\r\n" );
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document.write( "     g = 10 m/s^2  is the gravity acceleration;\r\n" );
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document.write( "     1.50-0.80 = 0.7  is the difference of heights, expressed in meters.\r\n" );
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document.write( "Two energies, potential and kinetic, are equal due to mechanical energy conservation law.\r\n" );
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\n" ); document.write( "\n" ); document.write( "You obtained full explanations.\r
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