What is Projectile Motion?

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What is Projectile Motion?

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Presentation transcript:

What is Projectile Motion?

Instructional Objectives: Students will be able to: Define Projectile Motion Distinguish between the different types of projectile motion

Projectile Motion Two-dimensional motion of an object Vertical Horizontal

Types of Projectile Motion Horizontal Motion of a ball rolling freely along a level surface Horizontal velocity is ALWAYS constant Vertical Motion of a freely falling object Force due to gravity Vertical component of velocity changes with time Parabolic Path traced by an object accelerating only in the vertical direction while moving at constant horizontal velocity

Examples of Projectile Motion Launching a Cannon ball

Equations X- Component Y- Component Vectors Note: g= 9.8 m/s^2

Factors Affecting Projectile Motion What two factors would affect projectile motion? Angle Initial velocity Initial Velocity Angle

Class Exercise An object is fired from the ground at 100 meters per second at an angle of 30 degrees with the horizontal Calculate the horizontal and vertical components of the initial velocity After 2.0 seconds, how far has the object traveled in the horizontal direction? How high is the object at this point?

Given: Angle = 30 degrees Vi= 100 m/s t= 2 sec g= 9.8 m/s/s

Unknown: Vx,Vy Range Maximum height reached

Solution Part a: Vertical and Horizontal Components Part b: Range Part c: Maximum height reached