A group of students wants to design a cold pack that can be used for athletic injuries. The cold pack will be made as follows:1. Place 100 mL of water in a small plastic bag that can be ruptured if it is squeezed hard enough.2. Place the bag with water into a larger plastic bag which does not rupture easily and is more durable.3. Pour 100 grams of ammonium nitrate into the larger bag close to the smaller plastic bag.4. Securely seal the large plastic bag.A diagram of the design is shown below.Which of the following would be the most likely constraint for this type of design? A. The comfort of the design when placed on the wounded area. B. The ease of use of placing the design on the wounded area. C. The cost of the liquid to be placed in the smaller sealed bag. D. The safety of the design in case the larger outer bag leaks.
Question
A group of students wants to design a cold pack that can be used for athletic injuries. The cold pack will be made as follows:1. Place 100 mL of water in a small plastic bag that can be ruptured if it is squeezed hard enough.2. Place the bag with water into a larger plastic bag which does not rupture easily and is more durable.3. Pour 100 grams of ammonium nitrate into the larger bag close to the smaller plastic bag.4. Securely seal the large plastic bag.A diagram of the design is shown below.Which of the following would be the most likely constraint for this type of design? A. The comfort of the design when placed on the wounded area. B. The ease of use of placing the design on the wounded area. C. The cost of the liquid to be placed in the smaller sealed bag. D. The safety of the design in case the larger outer bag leaks.
Solution
The most likely constraint for this type of design would be D. The safety of the design in case the larger outer bag leaks. This is because the ammonium nitrate is a chemical that can cause harm if it comes into contact with the skin or eyes, or if it is inhaled or ingested. Therefore, if the larger bag leaks, it could potentially expose the user to the ammonium nitrate, posing a safety risk. The other options (comfort, ease of use, and cost of the liquid) are also important considerations in the design, but safety is likely the most critical constraint.
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