An 10000 \(kg\) engine pulls a train of 4 \(wagons\), each of 2000 \(kg\), along a horizontal track. If the engine exerts a force of 70000 \(N\) and the track offers a friction force of 4000 \(N\), then calculate:
(a) the net accelerating force and
(b) the acceleration of the train
Note: Enter your answers with two decimal digits.
(a) Net accelerating force \(=\) \(N\)
(b) Acceleration of the train \(=\)