Find the ratio tb/ta, Along a straight road through town,

Find the ratio tb/ta

Reference no: EM13107085

Along a straight road through town, there are three speed-limit signs. They occur in the following order: 54 , 35 , and 18 mi/h, with the 35 -mi/h sign located midway between the other two. Obeying these speed limits, the smallest possible time tA that a driver can spend on this part of the road is to travel between the first and second signs at 54 mi/h and between the second and third signs at 35 mi/h. More realistically, a driver could slow down from 54 to 35 mi/h with a constant deceleration and then do the same thing from 35 to 18 mi/h. This alternative requires a time tB. Find the ratio tB/tA.

Reference no: EM13107085

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