Cars cruise down an expressway at 25 m/s. Engineers are designing an off-ramp in an interchange with a deceleration of −2.0 m/s2 that lasts 3.0 s.\n
a. What velocity will cars have at the end of the off-ramp?\n
b. What minimum length should the ramp have?\n
c. What maximum velocity could a car entering the off-ramp have and still be able to exit at the intended velocity? (Assume an extreme deceleration of four times the usual rate.)