How many things would you have
to get right to make this work?

Amazing_Waterslide_Jump_.mov

By the way, this is a fake

2. Projectile fired at an angle (not 0 or 90)

- Projectile path is parabolic

Baseball Throw
St. Mary's H.S. Physics

Victoria Lollo

Angle and Intitial Velocities

- Projectile fired at 5 m/s:

if Ө = 0

  V_ix = 5 m/s,  V_iy = 0

if Ө = 90

    then .....

V_ix= 0 m/s and V_iy = 5 m/s

If angle not 0 or 90 the  initial velocity is part vertical and part horizontal

Angle & Components
St. Mary's H.S. Physics

*** To understand this type of motion we must breakup the velocity into horizontal and vertical parts (components)

Finding Initial Horizontal & Vertical Components (parts)

V - velocity of projectile fired

V_ix - initial V in x direction

V_iy - initial V in y direction

Use Trig. to Find V_ix and V_iy

Since…

COSӨ = A/H = V_ix/V

CROSS MULTIPLY:

Initial Horizontal
Component of Velocity

Since…

sinӨ = Opp./Hyp. = V_iy/V

CROSS MULTIPLY:

Initial Vertical
Component of Velocity

A bouncing ball captured with a stroboscopic flash at 25 images per second.

MichaelMaggs Edit by Richard Bartz

Vertical Component

V_iy = VsinӨ

=(6.0 m/s)sin30.°

V_iy = 3.0 m/s up

Horizontal Component

V_ix = VcosӨ

 = (6.0 m/s)cos30.^°

V_ix = 5.2 m/s across

3. Other Important Facts

d_x = V_xt

(memorize)

Angles and Ranges

PelletierPhysics

Projectile Range
Don Ion

Minimum Range

0°, 90°

Maximum Range

45°

Angle with Longest Time in Air?

90 degrees

Angle & Components
St. Mary's H.S. Physics

70 degrees,

(closest to 90,
longer time in air)

Projectile at an Angle
- Word Problems

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