A train is on an incline and has a mass of
2.36 × 103 kg. It initially coasts at 27.8 m/s. Which of the following is the speed of the train at position B. Assume no additional assistance from the engine.
a. 24.8 m/s
b. 39.7 m/s
c. 19.8 m/s
d. 34.2 m/s