document.write( "Question 1110637: A rocket accelerates from rest at the rate of 55 m/s^2 for 20 s. It then moves at a constant speed for 5 s after which it accelerates at -35 m/s^2 until it stops. What is the distance travelled during the slowing down period? \n" ); document.write( "

Algebra.Com's Answer #725644 by KMST(5328) $\"\"$ $\"About$

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Accelerating from rest at the rate of $\"55\"$ $\"m\"$ $\"%22%2F%22\"$ $\"s%5E2\"$ for $\"20+s\"$ ,
\n" ); document.write( "the rocket would attain a speed of $\"55%2A20\"$ $\"%22m+%2F+s%22=%221100+m+%2F+s%22\"$ .
\n" ); document.write( "When it later decelerates with a constant $\"-35\"$ $\"m\"$ $\"%22%2F%22\"$ $\"s%5E2\"$ acceleration,
\n" ); document.write( "it takes $\"1100%2F35\"$ $\"s\"$ until it stops
\n" ); document.write( "During that slow down period the rocket's speed decreases linearly,
\n" ); document.write( "with an average speed of $\"1100%2F2\"$ $\"%22m+%2F+s%22\"$ .
\n" ); document.write( "During that period, travelling at that average velocity, it travels
\n" ); document.write( " $\"%281100%2F2%29%281100%2F35%29\"$ $\"m=1100%5E2%2F70\"$ $\"m=highlight%28518571m%29\"$ (rounded to the nearest meter).
\n" ); document.write( "
\n" ); document.write( "NOTE: I can write formulas, so if you want them ask,
\n" ); document.write( "but I saw no need to complicate a simple way to the solution. \n" ); document.write( "

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