If a rock is thrown vertically upward from the surface of Mars with velocity of 15 m/s, its height (in meters) after t secer is h= 15t-1.86². (a) What is the velocity (in m/s) of the rock after 3 s? 3.84 m/s (b) What is the velocity (in m/s) of the rock when its height is 10 m on its way up? On its way down? (Round your answers to two decimal places.) up 22.2 x m/s down -22.2 x m/s Need Help? Submit Answer Read It

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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If a rock is thrown vertically upward from the surface of Mars with velocity of 15 m/s, its height (in meters) after t secer is h= 15t-1.86².
(a) What is the velocity (in m/s) of the rock after 3 s?
3.84
m/s
(b) What is the velocity (in m/s) of the rock when its height is 10 m on its way up? On its way down? (Round your answers to two decimal places.)
up
22.2
x m/s
down
-22.2
x m/s
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Submit Answer
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Transcribed Image Text:If a rock is thrown vertically upward from the surface of Mars with velocity of 15 m/s, its height (in meters) after t secer is h= 15t-1.86². (a) What is the velocity (in m/s) of the rock after 3 s? 3.84 m/s (b) What is the velocity (in m/s) of the rock when its height is 10 m on its way up? On its way down? (Round your answers to two decimal places.) up 22.2 x m/s down -22.2 x m/s Need Help? Submit Answer Read It
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