Question

please solve this problem quickly its urgent I'll give brain merit point

Answer 1

M=8000 kg  5 wagons (each m = 2000 kg) =10000 kg

F=40000 N Track frictional force = 5000 N

(A) net force = force of engine - force of friction = 35,000 N

(B) a = F/m = 35,000/10,000 =3.5m/s (square)

(C)F =ma = 8000 *3.5 =28000 N

Answer 2

This is your answer