Can anybody help me it says, Model the force that would cause each velocity change.

Explanation:

Please try to take a better photo as it is difficult to read.

For the first case, it is a small force to the right as there is a small velocity change.

For the second case, there is no force as there is no change in velocity

For the third case, it is a large (could be medium but photo is too blurry) force to the right as there is a large change in velocity.

Explanation:

⇒ (small)

no force