document.write( "Question 1090436: A very large number of balls are thrown vertically upwards in quick succession in such a way that the next ballis thrown when the previous one is at maximum height. If maximum height is 5m, number of balls thrown per minute is ? \n" ); document.write( "

Algebra.Com's Answer #705015 by ikleyn(52817) $\"\"$ $\"About$

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document.write( "All we need to know is the time for which the ball thrown vertically up reaches its maximum height of 5 m.\r\n" );
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document.write( "If you ask a physicist, he immediately will answer you: the same time which is needed for freely falling ball \r\n" );
document.write( "to fall down 5 m, and will write an equation for it:\r\n" );
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document.write( " = 5.     (1)\r\n" );
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document.write( "For this problem, the physicist will take the gravity acceleration g equal to 10 m/s^2 (instead of the more precise \r\n" );
document.write( "value of 9.81 m/s^2), and then the equation (1) becomes\r\n" );
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document.write( " = 5,   or\r\n" );
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document.write( " =  = 1,\r\n" );
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document.write( "which implies t = 1 second for time.\r\n" );
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document.write( "So, the time interval between two successions is 1 seconds, and the number of balls thrown per minute is 60.\r\n" );
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document.write( "Answer.   The time interval between two successions is 1 seconds, and the number of balls thrown per minute is 60.\r\n" );
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