Include solution steps with units

2) Use the image of a subway train below to answer the questions. Ax = 2.00 km 0 x (km) (a) 1 X0 = 4.70 km 1 Xf = 6.70 km a. Suppose the train accelerates from rest to 30.0 km/h in the first 20.0 seconds of its motion. What is the average acceleration during that time interval (in m/s2)? Show both the velocity and acceleration vectors. known b. What is the average acceleration (in m/s2) of the train when it slows to a stop from a speed of 30.0 km/h in 8.00 s? Show both the velocity and acceleration vectors