large boulder is ejected vertically upward from volcano with an initial speed of 40.0 m/s. Air reoioto neo moy be ig nered

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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(Type only the letter of the correct answer) A
large boulder is ejected vertically upward from a
volcano with an initial speed of 40.0 m/s. Air
resistance may be ignored.
a. At what time after being ejected is the
boulder moving at 20 m/s upward?
Choices: a.) 2.04 s
b.) 6.12 s
c.)
8.16 s
d.) 4.08 s
Ans.:
b. At what time is it moving at 20.0 m/s
downward?
Choices: a.) 2.04 s
b.) 6.12 s
c.)
8.16 s
d.) 4.08 s
Ans.:
Transcribed Image Text:(Type only the letter of the correct answer) A large boulder is ejected vertically upward from a volcano with an initial speed of 40.0 m/s. Air resistance may be ignored. a. At what time after being ejected is the boulder moving at 20 m/s upward? Choices: a.) 2.04 s b.) 6.12 s c.) 8.16 s d.) 4.08 s Ans.: b. At what time is it moving at 20.0 m/s downward? Choices: a.) 2.04 s b.) 6.12 s c.) 8.16 s d.) 4.08 s Ans.:
c. When is the displacement of the boulder from
its initial position zero?
Choices: a.) 2.04 s
b.) 6.12 s
c.)
8.16 s
d.) 4.08 s
Ans.:
d. When is the velocity of the boulder zero?
Choices: a.) 2.04 s
b.) 6.12 s
c.)
8.16 s
d.) 4.08 s
Ans.:
Transcribed Image Text:c. When is the displacement of the boulder from its initial position zero? Choices: a.) 2.04 s b.) 6.12 s c.) 8.16 s d.) 4.08 s Ans.: d. When is the velocity of the boulder zero? Choices: a.) 2.04 s b.) 6.12 s c.) 8.16 s d.) 4.08 s Ans.:
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