Question

Current Attempt in Progress A train which is traveling at 72 mi/hr applies its brakes as it reaches point A and slows down with a constant deceleration, its decreased velocity is observed to be 55 mi/hr as it passes a point 1/2 mi beyond A. A car moving at 36 mi/hr passes point B at the same instant that the train reaches point A. In an unwise effort to beat the train to the crossing, the driver \"steps on the gas.\" Calculate the constant acceleration $a$ that the car must have in order to beat the train to the crossing by 3.7 sec and find the velocity v of the car as it reaches the crossing.

          Current Attempt in Progress
A train which is traveling at 72 mi/hr applies its brakes as it reaches point A and slows down with a constant deceleration, its
decreased velocity is observed to be 55 mi/hr as it passes a point 1/2 mi beyond A. A car moving at 36 mi/hr passes point B at the
same instant that the train reaches point A. In an unwise effort to beat the train to the crossing, the driver \"steps on the gas.\"
Calculate the constant acceleration $a$ that the car must have in order to beat the train to the crossing by 3.7 sec and find the velocity
v of the car as it reaches the crossing.

Current Attempt in Progress
A train which is traveling at 72 mi/hr applies its brakes as it reaches point A and slows down with a constant deceleration, its
decreased velocity is observed to be 55 mi/hr as it passes a point 1/2 mi beyond A. A car moving at 36 mi/hr passes point B at the
same instant that the train reaches point A. In an unwise effort to beat the train to the crossing, the driver s̈teps on the gas.C̈alculate the constant acceleration a that the car must have in order to beat the train to the crossing by 3.7 sec and find the velocity
v of the car as it reaches the crossing.

Added by James S.

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