The Danger Zone
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Transcript of The Danger Zone
The Danger ZoneThe Danger Zone
April 23, 2008April 23, 2008
EF 151EF 151
Final Group ProjectFinal Group Project
Our TeamOur Team&&
Our ProjectOur Project
Evan “Echo” Harb
Jessie “Juliet” Moore
Caleb “Charlie” Williams Reuben “Romeo” Robertson
Conservation of EnergyConservation of EnergyKEKE + PE + + PE + WWinin = KE = KEff + + PEPEff + + EElossloss
PE = KEPE = KEff
mgh = 1/2mv2
(.008)(9.81)(.085) = 1/2(.008)v2
V = 1.29 m/s
Projectile MotionProjectile Motiony-yy-yoo = (x-x = (x-xoo)tan)tanθθ – (g/(2V – (g/(2Voo
22)(1+tan)(1+tan22θθ)(x-x)(x-xoo))22
θ = 5.47
Conservation of MomentumConservation of Momentum
MM1 1 = Marble M= Marble M22 = Rat = Rat TrapTrap
MM11VV11 + + MM22VV22 = M = M1f1fVV1f1f + + MM2f2fVV2f2f
MM11VV11 = = MM1f1fVV1f1f
VV11 = V = V1f1f
VV1f 1f = -1.28 m/s= -1.28 m/s
ConclusionConclusion
Friction was Friction was neglected neglected on ramp and on ramp and in funnelin funnel
Coefficient Coefficient of of Restitution Restitution is ignoredis ignored
Marble hits the Marble hits the trap with 80% trap with 80% accuracyaccuracy