If a rock falls from a height of 35 meters on Earth, the height H (in meters) after x seconds is approximately H(x)=35-4.9x² (a) What is the height of the rock when x= 1.8 seconds? The height of the rock when x = 1.8 seconds is meters. (Round to three decimal places as needed.) (b) When is the height of the rock 8 meters? R The height of the rock is 8 meters when x seconds. (Round to two decimal places as needed) (c) When does the rock strike the ground? The rock strikes the ground when x seconds (Round to two decimal places as needed.)

If a rock falls from a height of 35 meters on Earth, the height H (in meters) after x seconds is approximately H(x)=35-4.9x² (a) What is the height of the rock when x= 1.8 seconds? The height of the rock when x = 1.8 seconds is meters. (Round to three decimal places as needed.) (b) When is the height of the rock 8 meters? R The height of the rock is 8 meters when x seconds. (Round to two decimal places as needed) (c) When does the rock strike the ground? The rock strikes the ground when x seconds (Round to two decimal places as needed.)

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter10: Force And Force-related Variables In Engineering

Section: Chapter Questions

Problem 28P

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Question

If a rock falls from a height of 35 meters on Earth, the height H (in meters) after x seconds is approximately H(x)=35-4.9x²
(a) What is the height of the rock when x= 1.8 seconds?
The height of the rock when x= 1.8 seconds is meters.
(Round to three decimal places as needed.)
(b) When is the height of the rock 8 meters?
The height of the rock is 8 meters when x seconds.
(Round to two decimal places as needed)
(c) When does the rock strike the ground?
The rock strikes the ground when x
(Round to two decimal places as needed.)
seconds

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