9. the diagrams below show forces acting on a toy car as it moves to the right. which diagram shows the car…

Explanation:

Step1: Calculate net - force for each option

Net - force is the vector sum of all forces acting on the object. For a one - dimensional motion (right - left in this case), if the force to the right is positive and to the left is negative, we find the net force.

Step2: Analyze Option A

The forces are 6 N to the right and 8 N to the left. Net force $F_A=6 - 8=- 2$ N (towards left).

Step3: Analyze Option B

The forces are 10 N to the right and 8 N to the left. Net force $F_B = 10-8 = 2$ N (towards right).

Step4: Analyze Option C

The forces are 13 N to the right and 10 N to the left. Net force $F_C=13 - 10 = 3$ N (towards right).

Step5: Analyze Option D

The forces are 10 N to the right and 10 N to the left. Net force $F_D=10 - 10 = 0$ N (no motion).

Step6: Compare net - forces

Since $F_C>F_B>0>F_A$, the car in Option C has the largest net force towards the right.

Answer:

C.