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We will now use energy considerations to find the speed of a falling object at impact. Artiom is on the roof replacing some shingles when his 0.

The hammer falls 3. Neglecting air resistance, the total mechanical energy of the system will remain the same. The sum of the kinetic energy and the gravitational potential energy possessed by the hammer 3. Upon impact, all of the energy is in a kinetic form.

The following equation can be used to represent the relationship: Because the hammer is at base level, the height of the hammer is equal to zero; therefore, the PE upon impact is zero. We may write our equation like this: According to the math rules we have learned, what does this mean? Manipulate the equation rearrange the variables to solve for v. Remember that manipulating an equation does not involve numbers and substitutions.

You just rearrange the equation. Use your equation from part B to find the speed with which the hammer struck the ground. What is the change in gravitational potential energy as the water splashes on the rocks below? Id rather you show us some work you have put into the question first rather than me doing it for you.

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Copied questions without context or explanation. You must show some work or thought. To view LaTeX on reddit, install one of the following: Custom superscript and subscripts: Course Summary If you're finding your high school physics class challenging, use our homework help course to get the assistance that you need. Get clarification on tough physics topics with our short, simple video lessons, and then take the multiple-choice quizzes to ensure you're ready for a quiz or test. Course Practice Test Check your knowledge of this course with a question practice test.

Comprehensive test covering all topics Detailed video explanations for wrong answers. Take Practice Test View all practice tests in this course. Go to chapter Introduction to Physics: Go to chapter Vectors in Physics: Go to chapter Kinematics in Physics: Newton's Laws in Physics: Examples of the Effect of Force on Motion Score: Go to chapter Newton's Laws in Physics: Definition, Characteristics, and Examples Score: Linear Momentum in Physics: Definition, Equation, and Examples Score: Go to chapter Linear Momentum in Physics: Rotational Motion in Physics: Go to chapter Rotational Motion in Physics: Circular Motion and Gravitation in Physics: Go to chapter Circular Motion and Gravitation in Physics: Go to chapter Oscillations in Physics: Electrical Forces and Fields in Physics: Go to chapter Electrical Forces and Fields in Physics: Potential and Capacitance in Physics: Go to chapter Potential and Capacitance in Physics: Direct Current Circuits in Physics: Lesson 1 - What is Physics?

Lesson 2 - Math Review for Physics: Lesson 3 - Math Review for Physics: Lesson 4 - Elements of the SI: Lesson 5 - The Metric System: Lesson 6 - Unit Conversion and Dimensional Analysis. Lesson 7 - Significant Figures and Scientific Notation. Lesson 10 - How to Do Volume Conversions. Lesson 11 - How to Convert Ounces to Liters. Lesson 12 - How to Convert Liters to Gallons. Lesson 13 - How to Convert mL to Gallons. Lesson 14 - Converting Quarts to Gallons: Lesson 15 - How to Convert Ounces to Gallons.

Lesson 16 - How to Convert Ounces to Cups. Lesson 17 - How to Convert Stone to Pounds. Lesson 18 - Physics of Resonance: Tacoma Narrows Bridge Collapse. Lesson 1 - What Is a Vector? Lesson 2 - Vector Addition Geometric Approach: Lesson 3 - Resultants of Vectors: Lesson 4 - Scalar Multiplication of Vectors: Lesson 5 - Vector Subtraction Geometric: Lesson 6 - Standard Basis Vectors: Lesson 8 - Vector Components: The Magnitude of a Vector.

Lesson 9 - Vector Components: The Direction of a Vector. Lesson 10 - Vector Resolution: Lesson 11 - The Dot Product and Vectors: Lesson 13 - Finding the Divergence of a Vector Field: Lesson 14 - Finding the Curl of a Vector Field: Lesson 15 - How to Find a Displacement Vector. Lesson 1 - What is Kinematics? Lesson 2 - Scalars and Vectors: Lesson 3 - What is Position in Physics?

Lesson 4 - Distance and Displacement in Physics: Lesson 5 - Speed and Velocity: Lesson 6 - Acceleration: Definition, Equation and Examples. Lesson 8 - Representing Kinematics with Graphs. Lesson 9 - Ticker Tape Diagrams: Analyzing Motion and Acceleration. Lesson 10 - What are Vector Diagrams?

Lesson 11 - Using Position vs. Time Graphs to Describe Motion. Lesson 12 - Determining Slope for Position vs. Lesson 13 - Using Velocity vs. Lesson 15 - Velocity vs. Determining Displacement of an Object. Lesson 16 - Understanding Graphs of Motion: Lesson 18 - Graphing Free Fall Motion: Lesson 19 - The Acceleration of Gravity: Lesson 20 - Projectile Motion: Lesson 21 - Projectile Motion Practice Problems. Lesson 22 - Kinematic Equations List: Lesson 1 - Newton's First Law of Motion: Examples of the Effect of Force on Motion.

Lesson 2 - Distinguishing Between Inertia and Mass. Lesson 3 - Mass and Weight: Lesson 4 - State of Motion and Velocity.

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If you're finding your high school physics class challenging, use our homework help course to get the assistance that you need. Get clarification on tough physics topics with our short, simple video lessons, and then take the multiple-choice quizzes to ensure you're ready for a quiz or test.

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