A model rocket shot straight upward with an initial velocity of vo = 25 m/s will reach a height of h meters in t seconds, where the height h is modeled by h(t) = -4.9t2 + 25t. (a) When does the rocket reach a height of 20 m? (Round your answers to two decimal places.) t = sec (smaller value) t = sec (larger value) (b) When does the rocket reach the highest point of its path? (Round your answer to two decimal places.) t = sec (c) When does the rocket hit the ground? (Round your answer to two decimal places.) t = sec

A model rocket shot straight upward with an initial velocity of vo = 25 m/s will reach a height of h meters in t seconds, where the height h is modeled by h(t) = -4.9t2 + 25t. (a) When does the rocket reach a height of 20 m? (Round your answers to two decimal places.) t = sec (smaller value) t = sec (larger value) (b) When does the rocket reach the highest point of its path? (Round your answer to two decimal places.) t = sec (c) When does the rocket hit the ground? (Round your answer to two decimal places.) t = sec

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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Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –

Question

A model rocket shot straight upward with an initial velocity of vo = 25 m/s will reach a height of h meters in t seconds, where the height h is
modeled by
h(t) = -4.9t2 + 25t.
(a) When does the rocket reach a height of 20 m? (Round your answers to two decimal places.)
t =
sec
(smaller value)
t =
sec
(larger value)
(b) When does the rocket reach the highest point of its path? (Round your answer to two decimal places.)
t =
sec
(c) When does the rocket hit the ground? (Round your answer to two decimal places.)
t =
sec

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