1. PHYSICS CLASS ACTIVITY

2. C.A.: Vo of Marble Launcher

3. Determine muzzle velocity of launcher 3 ways: –1)Vertical shoot –2)Photogate timer –3)Horizontal shoot C.A. #6: Marble Launcher V muzzle

4. a = ? C.A. #6: Marble Launcher V muz V f = V o + at d = V o t + ½ (at 2 ) V f 2 = V o 2 + 2ad a = g Y max = ___ V muzzle Vo Vf a t d downup/down up Find: a)Muzzle velocity V impact Measure: a)Y max V top = 0~ -10 m/s 2 Method #1: Vertical Shoot

5. Photogate Timer Photogate Overhead View V muz Light beam Marble Time ???

6. C.A. #6: Marble Launcher V muzzle Method #2: Photogate Timer V muz V = d/t V muz = diameter d = ? diameter t = ? t photogate Photogate diameter t = t photogate

7. C.A. #6: Marble Launcher V muz Horizontal distance (X ) Y= ____ V muz Vo VfVf a t d YX V f = V o + at d = V o t + ½ (at 2 ) V f 2 = V o 2 + 2ad Vfx Vfy Vf  Goal: Determine V muz Measure: Y, Range Method #3: Horizontal Shoot

8. Solve for Final Velocity of Horizontal Shoot Vfx Vfy Vf  Vfx = ____ Vfy = ____ Vf = ____ SHOW CALCULATIONS CLEARLY! 

9. Summary of Results