A Racecar Starts from Rest and Accelerates at a Constant

Multiple Choice

A racecar starts from rest and accelerates at a constant rate and reaches a speed of 160 km/h (100 mph) in 6.0 seconds.It continues at this speed for another 5 seconds.What is the car's average speed during the first 11 seconds?

A) 34.3 m/s
B) 29.3 m/s
C) 22.2 m/s
D) 32.3 m/s
E) 44.4 m/s