A large boulder is eiected vertically upward from a volcano with an intial speed of 40.8 m/s. Air resistance may be ignored. - Part A Ae what time after being ejected is the boulder moving at a speed 10.0 m/s upward? Express your answer in seconds. Chad reợo rhsết kayboard shontouts Help Reguentaner • Part A vwhat time is it moving at a speed 19.0 m/s downward? Express your answer in seconds ego taset keyboard shotouts Help eavetan - Part C When is the displacement of the boulder from its intial position zero? Express your answer in seconds. rego res keyboard shotouts Help ReguettAn - Part D When is the velooty of the boulder zero? Express your answer in seconds Temglatesymbols undo redo fesel keyboard shortouts Help Submit
A large boulder is eiected vertically upward from a volcano with an intial speed of 40.8 m/s. Air resistance may be ignored. - Part A Ae what time after being ejected is the boulder moving at a speed 10.0 m/s upward? Express your answer in seconds. Chad reợo rhsết kayboard shontouts Help Reguentaner • Part A vwhat time is it moving at a speed 19.0 m/s downward? Express your answer in seconds ego taset keyboard shotouts Help eavetan - Part C When is the displacement of the boulder from its intial position zero? Express your answer in seconds. rego res keyboard shotouts Help ReguettAn - Part D When is the velooty of the boulder zero? Express your answer in seconds Temglatesymbols undo redo fesel keyboard shortouts Help Submit
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Transcribed Image Text:**Problem Statement:**
A large boulder is ejected vertically upward from a volcano with an initial speed of 40.8 m/s. Air resistance may be ignored.
**Part A:**
- **Question:** At what time after being ejected is the boulder moving at a speed of 19.0 m/s upward?
- **Instruction:** Express your answer in seconds.
- **Input Field:** A text box labeled with "s" for inputting the answer.
- **Buttons:** "Submit" and "Request Answer"
**Part B:**
- **Question:** At what time is it moving at a speed of 19.0 m/s downward?
- **Instruction:** Express your answer in seconds.
- **Input Field:** A text box labeled with "s" for inputting the answer.
- **Buttons:** "Submit" and "Request Answer"
**Part C:**
- **Question:** When is the displacement of the boulder from its initial position zero?
- **Instruction:** Express your answer in seconds.
- **Input Field:** A text box labeled with "s" for inputting the answer.
- **Buttons:** "Submit" and "Request Answer"
**Part D:**
- **Question:** When is the velocity of the boulder zero?
- **Instruction:** Express your answer in seconds.
- **Input Field:** A text box labeled with "s" for inputting the answer.
- **Buttons:** "Submit" and "Request Answer"
These questions are designed to engage students in understanding the kinematics of projectile motion without air resistance. They require an application of concepts such as initial velocity, acceleration due to gravity, and the properties of motion. Each part focuses on a different aspect of motion: velocity change, direction change, displacement, and momentary rest.
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