To solve the problem it is necessary to apply the concepts related to Force of Friction and Tension between the two bodies.
In this way,
The total mass of the cars would be,


Therefore the friction force at 29Km / h would be,




In this way the tension exerts between first car and locomotive is,



Therefore the tension in the coupling between the car and the locomotive is 
Answer:
flattened by pressure; squeezed or pressed together.
Explanation:
Answer:
divide
Explanation:
whenever looking for velocity.just devide
c .... work is force x distance as a definition