Part A The engine in an imaginary sports car can provide constant power to the wheels over a range of speeds from 0 to 120 kilometers per hour (km/h). At full power, how long would it take for the car to accelerate from 0 to 90.0 km/h ? Neglect friction and air At full power, the car can accelerate from zero to resistance. 45.0 km/h in time 1.30 s . Express your answer in seconds. >View Available Hint(s) VO AEd ? SPart B A more realistic car would cause the wheels to spin in a manner that would result in the ground pushing it forward with a constant force (in contrast to the constant power in Part A). If such a sports car went from zero to 45.0 km/h in time 1.30 s , how long would it take to go from zero to 90.0 km/h ? Express your answer in seconds. View Available Hint(s) VO AEd S6 Given, u = 0 mls V = 45 km/b = 45X5 mis V = 1. 5 mls 18 t = 1. 30 sec Using Ist kinematic v = ut at 12. 5 = 0+ a ( 1 . 30 ) a = 12-5 1 : 30 - a = 9. 69 mis2 Since force is constant Hence, ' a ' as constant . u' = 0 mls D U'= gokm/b = as mls t = 3 a = 9. 62 mls 2 V' = u' + at' 25 = 0+ 9.621 1 9 . 62