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Understanding Free-Fall Motion: Velocity, Acceleration, and Newton's Laws

This educational experience aims to explore the fundamentals of free-fall motion, focusing on key concepts such as velocity, acceleration, and Newton's Second Law. Participants will measure the rate of descent of an object, distinguish between different types of velocity, and develop a solid understanding of vectors and their applications. The experience will cover the relationship between net force, mass, and acceleration, as well as introduce participants to basic forces and their characteristics. By utilizing trigonometry and problem-solving techniques, participants will enhance their knowledge of motion in physics.

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Understanding Free-Fall Motion: Velocity, Acceleration, and Newton's Laws

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Presentation Transcript

  1. Objectives of this Experience • Measure the rate at which an object travels in free-fall. • Define in your own words velocity and acceleration. • Distinguish between initial, final and average velocity. • Develop a basic understanding of vectors.

  2. Objectives of this Experience(continued) • Discover the relationship between net force, acceleration, and mass. • Name four basic forces, describe their strengths and give some examples of each. • State Newton’s Second Law, be able to use it in solving problems, and display an understanding of its application. • Incorporate the concept of gravity in utilizing Newton’s Second Law.

  3. Vectors Magnitude and Direction vector X + vector Y = vector R Head to Tail Method For example: If a plane was traveling due east at a speed of 120 mph and encountered a wind coming directly from the south, what would be the resulting speed of the airplane and in what direction would it be traveling? Resultant R y X component x y All vectors can be resolved into their x and y components.

  4. What do you remember about triangles? Pythagorean Theorem(Leg X)2 + (Leg Y)2 = (Hypotenuse R)2 Hypotenuse R R = X2 + Y2 Leg Y Note: This only applies to right triangles Leg X Similar Triangles

  5. A Little Trigonometry • Right Triangles Sine ө = opposite/hypotenuse Cosine ө = adjacent/hypotenuse Tangent ө = opposite/adjacent hypotenuse opposite ө adjacent

  6. Formulas • Average Velocity = d/t or (Vf + Vo)/2 (Vf = final velocity. Vo = initial velocity.) • Acceleration = (Vf – Vo)/t (Change in velocity/time) • F = ma (Newton’s Second Law) • Vf = √(Vo2 + 2ad) • T = √(2d/g)

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