The engine in an imaginary sports car can provide constant power to the wheels over a range of speeds from 0 to 70 miles per hour ( mph ). At full power, the car can accelerate from zero to 30.0 mph in 1.20 s .
At full power, how long (in seconds) would it take for the car to accelerate from 0 to 60.0 mph ? (Neglect friction and air resistance)
(Answer in 3 significant figures)