A 4 kg test object moving at 1.5 m/s is brought to rest without rebound. The current design stops it in 0.02 s; a reusable suspension frame stops it in 0.08 s. Consider only the contact force along the horizontal direction and use average force = momentum change / stopping time. The proposed design reduces average force during the specified stop, but requires more material and careful setup. Evaluate adoption for field researchers and technicians unpacking samples, using both a force calculation and wider implications. Evidence limitation: The frame must also be tested for sideways impacts and repeated vibration.

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Momentum-change magnitude 6 kg m/s; average force falls from 300 N to 75 N. A conditional, tested adoption is defensible; average force alone does not establish complete safety or best value. The same test mass loses the same speed in both designs, so the impulse magnitude is 4 × 1.5 = 6 kg m/s. The longer stopping time changes the force, not the total required momentum change. The original average force is 6/0.02 = 300 N and the proposed force is 6/0.08 = 75 N. Both act opposite the initial motion. Relate the calculation to the specific benefit: a reusable suspension frame reduces average force during the specified stop. The smaller average contact force is evidence for improved performance under this test, not a claim that energy or momentum disappears. Balance that benefit against a practical consequence: the design requires more material and careful setup. Include the needs of field researchers and technicians unpacking samples, rather than allowing the cheapest purchase price or lowest force alone to decide. A justified recommendation is a monitored trial with a stated acceptance test before broad adoption. The frame must also be tested for sideways impacts and repeated vibration. Report peak force, durability and relevant access constraints alongside the average-force calculation.

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