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C.A.: Vo of Marble Launcher. C.A. #6: Marble Launcher V muzzle. Determine muzzle velocity of launcher 3 ways: 1) Vertical shoot 2) Photogate timer 3) Horizontal shoot. Vo. Vf. a. t. d. Find: Muzzle velocity. C.A. #6: Marble Launcher V muz. Method #1: Vertical Shoot. Measure:

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C a 6 marble launcher v muzzle
C.A. #6: Marble Launcher Vmuzzle

  • Determine muzzle velocity of launcher 3 ways:

    • 1) Vertical shoot

    • 2) Photogate timer

    • 3) Horizontal shoot


C a 6 marble launcher v muz

Vo

Vf

a

t

d

  • Find:

  • Muzzle velocity

C.A. #6: Marble Launcher Vmuz

Method #1: Vertical Shoot

  • Measure:

  • Y max

Vtop = 0

a = ?

a = g

~ -10 m/s2

Vf = Vo + at

d = Vot + ½ (at2)

Ymax = ___

Vf 2 = Vo2 + 2ad

up

down

up/down

Vmuzzle

Vimpact


Photogate timer
Photogate Timer

Vmuz

Photogate

Light beam

Marble

Time ???

Overhead View


C a 6 marble launcher v muzzle1
C.A. #6: Marble Launcher Vmuzzle

Method #2: Photogate Timer

Vmuz

diameter

Photogate

V= d/t

diameter

d = ?

t = t photogate

t = ?

Vmuz = diameter

t photogate


C a 6 marble launcher v muz1

Vf = Vo + at

d = Vot + ½ (at2)

Vf 2 = Vo2 + 2ad

X

Y

Vo

Vf

a

t

d

C.A. #6: Marble Launcher Vmuz

Method #3: Horizontal Shoot

Goal: Determine Vmuz

Measure: Y, Range

Vmuz

Y= ____

Horizontal distance (X )

Vfx

Q

Vf

Vfy


Solve for final velocity of horizontal shoot
Solve for Final Velocity of Horizontal Shoot

Vfx = ____

Vfx

Vfy = ____

Q

Vf = ____

Vf

Vfy

Q = ___

SHOW CALCULATIONS CLEARLY!



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