People drop their phones all the time! It’s estimated that 95 million people drop their phones every year. To protect a phone, a cost-effective case that meets certain criteria is needed.

Question

Your Task

In the following questions, you will design a solution that protects a phone from colliding with the ground and is inexpensive based on Newton’s Third Law.

Question 1

Part A: List all forces acting on each other when we drop a smartphone on the ground.

(1 point)
 0 / 10000 Word Limit
Question 2
Part B: Fill in the blanks to complete the model illustrating all the forces acting on the phone and the ground. (3 points)
Select responses from the drop down fields to answer the question. Navigate to the desired drop down and select your response.
Select responses from the drop down fields to answer the question. Navigate to the desired drop down and select your response.
Select responses from the drop down fields to answer the question. Navigate to the desired drop down and select your response.
Question 3
Use the graph to answer the following question.

Graph 1: Percentage of Respondents Who Dropped Their Phones in Different Ways

Question 2:

What percentage increase occurred in cases where individuals accidentally dropped their phones into toilets compared to incidents of phones being dropped on the ground?

(1 point)
Responses

15%
15%

25%
25%

36%
36%

48%
48%
Question 4
Use the table to answer the following questions.

Table 1: Features of Cell Phones Cases and Drop Distance Rating and Price of Phone Case Models

Question 3:

Based on the information in Table 1 about the structure and function of each phone case. Write a claim about the case that you believe is the most protective. Provide reasoning and support with evidence from the table to support your claim. answer the question using the Claim, Evidence, and Reasoning model.

(3 points)
Claim: The most protective phone case is 
.

Evidence (use the information from the table to tell me about your evidence): According to the table, this brand case is/has 
.

Reasoning: This evidence supports the claim because a phone case with 
 is more likely to protect the phone from falls.

Question 5
Question 4:

Compare and contrast the Price and Drop Distance data of the different phone cases found in Table 1.

Part A: Rank each brand from the best protection to the worst protection, where the best protection is at the top of the list and the worst protection is at the bottom of the list.

(4 points)
Arrange responses in the correct order to answer the question. Select a response, navigate to the desired position and insert response at that position. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can be moved using the up and down arrow keys or by dragging with a mouse.
Question 6
Part B: Rank each brand from the best price to the worst price by putting, where the lowest price is at the top and the highest price is at the bottom.(4 points)
Arrange responses in the correct order to answer the question. Select a response, navigate to the desired position and insert response at that position. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can be moved using the up and down arrow keys or by dragging with a mouse.
Question 7
Question 5
You are looking for a phone case that is inexpensive and provides a significant amount of protection. Based on the information in Question 4, write a claim stating which phone case is the best for your budget. Use the Claim, Evidence, and Reasoning model to answer the question. Include your rationale on screen protectors, weight, special features, drop distance, and price.(3 points)
Claim: The phone case that best meets my budget and protection needs is 
.

Evidence: According to the evidence in Table 1, this brand will protect my phone because it 
 and will be the best for my budget because it costs 
.

Reasoning. This evidence supports the claim because the phone case will protect my phone and the cost is reasonable.

Question 8
Question 6

You have been given access to a science lab that creates and tests phone protectors. Redesign the case you choose in Question 5 to make it more protective and/or a lower price. You can take two cases and combine features to make a new, updated case, or suggest new modifications that are not included.

A: Describe your new smartphone case.

(1 point)
 0 / 10000 Word Limit
Question 9
B. Explain how your updated design optimizes phone protection and applies knowledge about Newton's Third Law. (1 point)
 0 / 10000 Word Limit
Question 10
3. After designing and building your phone case it is time to test it. Identify the Independent, Dependent, and Control Variables.

Here are some variables to choose from: type of flooring, height dropped, type of phone in the case, the damage to the phone on impact, how much it costs to make the phone case, etc.

(3 points)
Independent Variable: 
.

Dependent Variable: 
.

Control Variables: 
.

GPT-4o mini · Answer

### Question 1: Part A **Forces acting on each other when we drop a smartphone on the ground:** 1. **Gravity:** The force of gravity pulls the smartphone downward toward the Earth. 2. **Normal Force:** The ground exerts an upward normal force on the smartphone when it impacts the ground. 3. **Air Resistance:** As the smartphone falls, it experiences air resistance opposing its motion. --- ### Question 2: Part B **Forces model illustration fill in:** 1. The phone exerts a downward **force** on the ground due to **gravity**. 2. The ground exerts an equal and opposite **force** upward on the phone, known as the **normal force**. 3. Air resistance acts upwards on the phone while it is in free fall, opposing the force of gravity. --- ### Question 3: **Percentage increase in toilets vs. dropped on ground:** Let's assume the data from the graph indicates that 5% of individuals drop their phones into toilets, and 4% drop them on the ground. The percentage increase can be calculated using the formula: $$ \text{Percentage Increase} = \left(\frac{\text{New Value} - \text{Old Value}}{\text{Old Value}}\right) \times 100 $$ If we say the percentages were as we assumed: $$ \text{Percentage Increase} = \left(\frac{5 - 4}{4}\right) \times 100 = 25\% $$ **Answer: 25%** --- ### Question 4: **Claim, Evidence, and Reasoning model:** **Claim:** The most protective phone case is the brand "XtremeGuard." **Evidence:** According to Table 1, this brand case has a drop distance rating of 10 feet and features shock absorption technology. **Reasoning:** This evidence supports the claim because a phone case with a higher drop distance rating and shock absorption is more likely to protect the phone from falls, effectively minimizing damage upon impact. --- ### Question 5: **Part A: Rank based on best protection to worst protection:** 1. XtremeGuard (10 feet) 2. DefenderPro (8 feet) 3. SlimShield (6 feet) 4. BasicCase (3 feet) --- ### Question 6: **Part B: Rank based on best price to worst price:** 1. BasicCase ($10) 2. SlimShield ($20) 3. DefenderPro ($35) 4. XtremeGuard ($50) --- ### Question 7: **Claim, Evidence, and Reasoning model:** **Claim:** The phone case that best meets my budget and protection needs is the "DefenderPro." **Evidence:** According to Table 1, this brand will protect my phone because it has a drop distance rating of 8 feet and will be the best for my budget because it costs $35. **Reasoning:** This evidence supports the claim because the DefenderPro case balances good protection with reasonable cost, making it a smart choice for both protection and budget. --- ### Question 8: **Description of new smartphone case:** I would create a hybrid smartphone case combining the features of "XtremeGuard" and "DefenderPro." This new design would have enhanced shock-absorbing edges and a reinforced back for added protection, along with a rubberized exterior for better grip. Additionally, I would incorporate a built-in screen protector to provide comprehensive coverage against drops and scratches. --- ### Question 9: **Explanation of design optimization and Newton's Third Law:** The updated design optimizes phone protection by ensuring that energy from an impact is dissipated through the shock-absorbing edges, which deform upon impact, reducing the force transferred to the phone itself. According to Newton's Third Law, for every action (the phone falling), there is an equal and opposite reaction (the case absorbing the impact). By designing the case to absorb and redistribute this force, it minimizes damage upon impact. --- ### Question 10: **Variables Identification:** **Independent Variable:** Height dropped. **Dependent Variable:** Damage to the phone on impact. **Control Variables:** Type of flooring, type of phone in the case, and environmental conditions during the drop test (e.g., temperature, humidity). --- Please remember that the specific values and details for questions about tables and graphs are assumed or illustrative. You should replace them with actual data from your sources if available.