Objectives of this experience
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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. Objectives of this Experience (continued).

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Objectives of this experience

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.


Objectives of this experience continued

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.


Vectors

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.


What do you remember about triangles

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


A little trigonometry

A Little Trigonometry

  • Right Triangles

Sine ө = opposite/hypotenuse

Cosine ө = adjacent/hypotenuse

Tangent ө = opposite/adjacent

hypotenuse

opposite

ө

adjacent


Formulas

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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