# Objectives of this Experience - PowerPoint PPT Presentation

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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

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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)

• 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

Magnitude and Direction

vector X + vector Y = vector R

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?

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

• Right Triangles

Sine ө = opposite/hypotenuse

hypotenuse

opposite

ө

### 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)