PROJECTILE MOTION

What is projectile motion?

What are the two (2) cases of projectile motion? How do they differ from each other?

Guide Questions

What factors affect the motion

of a projectile? How do these factors affect a projectile?

Is a projectile a free falling body? Explain.

Guide Questions

Projectile motion – a combination of

vertical and horizontal motions that are completely independent of each other

Projectile – an object or body thrown with an initial velocity and whose motion is influenced by the pull of gravity

Important Terms

Trajectory – the curved path of a

projectile; it is principally determined by two types of motion: vertical and horizontal motions

Range (dx) – the horizontal displacement of a projectile

Important Terms

Height (dy) – the vertical

displacement of a projectile

Important Terms

Projectile I: Body Launched Horizontally (θ= 0°)

Cases

Projectile II: Body Launched at a Certain Angle

(90°>θ> 0°)

Cases

Initial Velocity

What affects a projectile?

Projection Angle

What affects a projectile?

What affects a projectile?

What affects a projectile?

Projectile Motion vs. Free Fall

Projectile Motion vs. Free Fall

Examples

Examples

What is projectile motion?

What are the two (2) cases of projectile motion? How do they differ from each other?

Guide Questions

What factors affect the motion

of a projectile? How do these factors affect a projectile?

Is a projectile a free falling body? Explain.

Guide Questions

A little girl throws her jackstone ball

horizontally out of the window with a velocity of 30 m/s. If the window is 3 m above the level ground, how far will the ball travel before it hits the ground?

Given: ; Find:

Sample Problem 1

Sample Problem 1

Solution:a. Vertical motion

b. Horizontal motion 0.78 s)

A golf ball was hit and projected at an angle

of 60° with the horizontal. If the initial velocity of the ball was 50 m/s, calculate the (a) time the golf ball was in the air;

(b) horizontal distance the ball traveled; and (c) maximum height the ball reached. Given: θ = 60°; Find: tT; dx; dy

Sample Problem 2

Sample Problem 2

Solution:a. Upward vertical motion at maximum height

Sample Problem 2

b. Horizontal motion

c. Vertical motion at max. height

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