You throw a 20-N rock vertically into the air from ground level. You observe that when it is a height 15.1 m above the ground, it is traveling at a speed of 24.7 m/s upward. Part A Use the work-energy theorem to find its speed just as it left the ground. v0 = Submit Part B h= Use the work-energy theorem to find its maximum height. Submit 5 ΑΣΦ Request Answer Provide Feedback 195] ΑΣΦ Request Answer ? ? m/s m

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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**Exercise 8.12**

A rock with a weight of 20 N is thrown vertically into the air from the ground level. At a height of 15.1 m above the ground, the rock is traveling upward at a speed of 24.7 m/s.

**Part A**

Use the work-energy theorem to determine the rock's speed just as it left the ground.

- \(v_0 =\) [Input Field] m/s

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[Request Answer Link]

**Part B**

Use the work-energy theorem to find the rock's maximum height.

- \(h =\) [Input Field] m

[Submit Button]
[Request Answer Link]

**Provide Feedback Link**
Transcribed Image Text:**Exercise 8.12** A rock with a weight of 20 N is thrown vertically into the air from the ground level. At a height of 15.1 m above the ground, the rock is traveling upward at a speed of 24.7 m/s. **Part A** Use the work-energy theorem to determine the rock's speed just as it left the ground. - \(v_0 =\) [Input Field] m/s [Submit Button] [Request Answer Link] **Part B** Use the work-energy theorem to find the rock's maximum height. - \(h =\) [Input Field] m [Submit Button] [Request Answer Link] **Provide Feedback Link**
Expert Solution
Step 1

Given:

Weight W=20 N

Height h'=15.1 m

The speed at height h' is v=24.7 m/s

The motion is in the upward direction.

Find out:

(a) The speed of the rock as it left the ground.

(b) Maximum height.

 

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