document.write( "Question 1071283: NASA launches a rocket at t=0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t)=−4.9t2+307t+157.
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Algebra.Com's Answer #686229 by ikleyn(52781) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "This equation is for a body (a ball, an arrow, a toy rocket) which is thrown vertically up with the initial speed of 307 m/s.\r\n" );
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document.write( "The body participates in TWO movements simultaneously:\r\n" );
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document.write( "     1.  It moves uniformly verticaly up,  and\r\n" );
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document.write( "     2.  Is falls free with the gravity acceleration of 9.81 m/s^2.\r\n" );
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document.write( "This equation IS NOT for the real rocket launched by NASA, when the working engine provides the acceleration vertically up.\r\n" );
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document.write( "This equation is for the \"toy rocket\" without the engine, launched with the vertical initial velocity.\r\n" );
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document.write( "I am glad that your post was broken.\r\n" );
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document.write( "It gave me the possibility to educate you a bit.\r\n" );
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