Question

1. what is the net force? a) 4000 n right b) 40 n left c) 4000 n left d) 5000 n right engine car trailer 6000 n 1000 n 1000 n

Explanation:

Step1: Define positive - direction

Let the left - direction be positive.

Step2: Calculate the net force

The force of the engine is $F_{engine}=6000N$ (left), the force on the car is $F_{car} = 1000N$ (right), and the force on the trailer is $F_{trailer}=1000N$ (right). The net force $F_{net}=F_{engine}-F_{car}-F_{trailer}$. Substitute the values: $F_{net}=6000 - 1000 - 1000$.
$F_{net}=4000N$ (left)

Answer:

c) 4000 N left