11. Problem on force and acceleration (Second law of motion)

An 7000 \(kg\) engine pulls a train of 6 \(wagons\), each of 2500 \(kg\), along a horizontal track. If the engine exerts a force of 80000 \(N\) and the track offers a friction force of 5000 \(N\), 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 \(=\)  $m{s}^{-2}$