document.write( "Question 813144: if a car can go from rest to 60 mph in 4.5 sec how long will it take the car to accelerate from rest to 30 mph? \n" ); document.write( "

Algebra.Com's Answer #489684 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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if a car can go from rest to 60 mph in 4.5 sec how long will it take the car to accelerate from rest to 30 mph?
\n" ); document.write( "Find the average acceleration
\n" ); document.write( "a = $\"%28Vf+-+Vi%29%2Ft\"$ where
\n" ); document.write( "a = acceleration
\n" ); document.write( "Vf = final velocity
\n" ); document.write( "Vi = initial velocity
\n" ); document.write( "t = time
\n" ); document.write( ":
\n" ); document.write( "Initial V = 0, therefore
\n" ); document.write( "a = $\"60%2F4.5\"$
\n" ); document.write( "a = 13.333 mph/sec^2
\n" ); document.write( ":
\n" ); document.write( "Find the time to accelerate to 30
\n" ); document.write( "t = $\"30%2F13.333\"$
\n" ); document.write( "t = 2.25 sec \n" ); document.write( "

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