document.write( "Question 98881: At the instant the traffic light turns green, an automobile starts with a constant acceleration of a 2.5m/s^2. At the same instant a truck traveling with a constant speed of 7.1 m/s, overtakes the automobile
\n" ); document.write( "(A) how far beyond the traffic signal will the automobile overtake the truck?
\n" ); document.write( "(B) how fast will the car be travelling at that instant \n" ); document.write( "

Algebra.Com's Answer #72067 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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At the instant the traffic light turns green, an automobile starts with a constant acceleration of a 2.5m/s^2. At the same instant a truck traveling with a constant speed of 7.1 m/s, overtakes the automobile.
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\n" ); document.write( "THis looks like a physics problem, but this is what I think.
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\n" ); document.write( "When the car overtakes the truck, they will have traveled the same distance.
\n" ); document.write( "Since the car was stopped, it will have to accelerate to twice the speed (which
\n" ); document.write( "is 14.2 m/s), of the truck to average the same speed as the truck to that point:
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\n" ); document.write( "Time to accelerate to 14.2 = $\"14.2%2F2.5\"$ = 5.68 sec
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\n" ); document.write( "\n" ); document.write( "(A) how far beyond the traffic signal will the automobile overtake the truck?
\n" ); document.write( "5.68 * 7.1 = 40.328 meters
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\n" ); document.write( "(B) how fast will the car be traveling at that instant
\n" ); document.write( "14.2 m/s will be the speed of the car.
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