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A rock is dropped from a height of 88.8 m and falls toward Earth in a straight line. In t seconds the rock falls 4.9t² meters. (a) What is the average velocity of the rock for the first 2 s? 9.8 m/s (b) How long does it take for the rock to hit the ground? (Round your answer to three decimal places.) 4.2 (c) What is the average velocity of the rock during the time it is falling? (Round your answer to two decimal places.) 21.14 x m/s (d) What is the velocity v of the rock when it hits the ground? (Round your answer to two decimal places.) x m/s v 41.88 A

A rock is dropped from a height of 88.8 m and falls toward Earth in a straight line. In t seconds the rock falls 4.9t² meters. (a) What is the average velocity of the rock for the first 2 s? 9.8 m/s (b) How long does it take for the rock to hit the ground? (Round your answer to three decimal places.) 4.2 (c) What is the average velocity of the rock during the time it is falling? (Round your answer to two decimal places.) 21.14 x m/s (d) What is the velocity v of the rock when it hits the ground? (Round your answer to two decimal places.) x m/s v 41.88 A

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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A rock is dropped from a height of 88.8 m and falls toward Earth in a straight line. In t seconds the rock falls 4.9t² meters. (a) What is the average velocity of the rock for the first 2 s? 9.8 m/s (b) How long does it take for the rock to hit the ground? (Round your answer to three decimal places.) 4.2 x s (c) What is the average velocity of the rock during the time it is falling? (Round your answer to two decimal places.) x m/s 21.14 (d) What is the velocity v of the rock when it hits the ground? (Round your answer to two decimal places.) x m/s v 41.88 +
Transcribed Image Text:A rock is dropped from a height of 88.8 m and falls toward Earth in a straight line. In t seconds the rock falls 4.9t² meters. (a) What is the average velocity of the rock for the first 2 s? 9.8 m/s (b) How long does it take for the rock to hit the ground? (Round your answer to three decimal places.) 4.2 x s (c) What is the average velocity of the rock during the time it is falling? (Round your answer to two decimal places.) x m/s 21.14 (d) What is the velocity v of the rock when it hits the ground? (Round your answer to two decimal places.) x m/s v 41.88 +
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