In a rotary mower, cutting occurs when the blade ___ into the grass.

In a rotary mower, cutting occurs when the blade ___ into the grass.

• A. Pushes
• B. Impacts
• C. Slices
• D. Removes

Answer: (B)

The cutting action comes from the blade moving at high speed and meeting the grass with enough force to shear it. When the sharp edge of the blade enters the blade of grass, it imparts energy and creates a quick, tearing action that separates the leaf from the stalk. This rapid contact and shearing is what actually cuts, so saying the blade “impacts” into the grass best describes the moment that makes the cut happen. Pushing into the grass doesn’t capture that swift, energy-transfer moment; slicing is close but the emphasis is on the impact and ensuing shear; removing is the outcome, not the action.

The cutting action comes from the blade moving at high speed and meeting the grass with enough force to shear it. When the sharp edge of the blade enters the blade of grass, it imparts energy and creates a quick, tearing action that separates the leaf from the stalk. This rapid contact and shearing is what actually cuts, so saying the blade “impacts” into the grass best describes the moment that makes the cut happen. Pushing into the grass doesn’t capture that swift, energy-transfer moment; slicing is close but the emphasis is on the impact and ensuing shear; removing is the outcome, not the action.