A stone is thrown straight upward and at the top of its trajectory its velocity is momentar- ily zero. What is its acceleration at this point? 1. Zero 2. Unable to determine 3. 9.8 m/s² up 4. 9.8 m/s² down

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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
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012 (part 1 of 2) 10.0 points
A stone falls freely from rest for 17 s.
Calculate the stone's velocity after that
time. The acceleration due to gravity is
9.8 m/s² .
Answer in units of m/s.
013 (part 2 of 2) 10.0 points
What was the stone's displacement after that
time?
Answer in units of m.
Transcribed Image Text:012 (part 1 of 2) 10.0 points A stone falls freely from rest for 17 s. Calculate the stone's velocity after that time. The acceleration due to gravity is 9.8 m/s² . Answer in units of m/s. 013 (part 2 of 2) 10.0 points What was the stone's displacement after that time? Answer in units of m.
A stone is thrown straight upward and at the
top of its trajectory its velocity is momentar-
ily zero.
What is its acceleration at this point?
1. Zero
2. Unable to determine
3. 9.8 m/s² up
4. 9.8 m/s² down
Transcribed Image Text:A stone is thrown straight upward and at the top of its trajectory its velocity is momentar- ily zero. What is its acceleration at this point? 1. Zero 2. Unable to determine 3. 9.8 m/s² up 4. 9.8 m/s² down
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