A stunt man drives a 1500 kg car at a speed of 25 m/s off a 40-m-high cliff. The road leading to the cliff is inclined upward at an angle of 20°. What is the car's impact speed?
a) 31.55 m/s
b) 34.67 m/s
c) 38.20 m/s
d) 41.84 m/s