document.write( "Question 323597: Solve using the five-step problem-solving process.
\n" ); document.write( "An object's altitude, in meters, is given by the polynomial h + vt - 9.8t2, where h is the height in meters from which the launch occurs, v is the initial upward speed in meters per second, and t is the number of seconds for which the rocket is airborne. A pebble is shot upward from the top of a building 200 meters tall. If the initial speed is 30 meters per second, how high above the ground will the pebble be after 4 seconds? Round results to the nearest tenth of a meter. please help me \n" ); document.write( "

Algebra.Com's Answer #231567 by stanbon(75887) $\"\"$ $\"About$

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An object's altitude, in meters, is given by the polynomial h = vt - 9.8t2, where h is the height in meters from which the launch occurs, v is the initial upward speed in meters per second, and t is the number of seconds for which the rocket is airborne. A pebble is shot upward from the top of a building 200 meters tall. If the initial speed is 30 meters per second, how high above the ground will the pebble be after 4 seconds?
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\n" ); document.write( "Equation:
\n" ); document.write( "s(t) = -9.8t^2 + vt + h
\n" ); document.write( "---
\n" ); document.write( "s(4) = -9.8(4)^2 + 30*4 + 200
\n" ); document.write( "---
\n" ); document.write( "s(4) = 163.2 meters
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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