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Perfectly Inelastic Collision Lab
Name:______________________
1. Collision 1 : Using Velcro ( Equal Mass Collision)
a. Collide an empty G cart moving at moderate speed into an empty Y cart at rest. b. Only the position sensor needs to be on. c. Show just plots v(t) d. Reverse the direction of the position and force sensors on the Y car if need be.
Before After
Mass G car 0.30 kg -------------------- (^) ----------------
Velocity of the G car 0.55 m/s Velocity of the G+Y car (^) 0.269 m/s
Momentum of the G car m/s Mass of G+Y car (^) 0.6 kg
Mass Y car 0.30 kg (^) ---------------- ----------------
Velocity of the Y car 0 m/s (^) ---------------- ----------------
Momentum of the Y car 0 Momentum of the G+Y cars (^) kg m/s
Total momentum kg m/s Total momentum (^) kg m/s
Before ½ mV^2 After 0.5.6.269^2
Kinetic Energy of G Car J Kinetic Energy of G+Y Cars J
Kinetic Energy of Y Car 0 -------------------- --------------------
Total Kinetic Energy J Total Kinetic Energy J
- How does the total momentum of the two cart system before the collision compare to the
Total momentum of the two cart system after the collision? Was momentum conserved within experimental error?
We witnessed the same momentum before and after the collision w/in experimental error. (only 2% loss which is within random experimental error)
- How much Kinetic energy did you lose? 0.045 - 0.022 J = 0.023J lost
- What was the percent loss or gain of the kinetic energy? (.023/.045)*100 = 51%!
5. Where did the energy go?
9. Collision 3 : (Maximum Mass on Yellow cart at rest)
Before After
Mass G car 0.30 kg -------------------- (^) ----------------
Velocity of the G car Velocity of the G+Y car
Momentum of the G car Mass of G+Y car
Mass Y car 0.80 kg (^) ---------------- ----------------
Velocity of the Y car 0 m/s (^) ---------------- ----------------
Momentum of the Y car Momentum of the G+Y cars
Total momentum Total momentum
Before After
Kinetic Energy of G Car Kinetic Energy of G+Y Cars
Kinetic Energy of Y Car -------------------- --------------------
Total Kinetic Energy Total Kinetic Energy
- How does the total momentum of the two cart system before the collision compare to the total momentum of the two cart system after the collision? Was momentum conserved within experimental error?
- How much Kinetic energy did you lose?
- What was the percent loss or gain of the kinetic energy?
- Where did the energy go?
- How does the total momentum of the two cart system before the collision compare to the total momentum of the two cart system after the collision? Was momentum conserved within experimental error?
- How much Kinetic energy did you lose?
- What was the percent loss or gain of the kinetic energy?
- Where did the energy go?
Collision 5 : ( Explosion or Super Elastic Collision)
Name:________________
a. Reverse the direction of the position sensor on the G car if need be. b. Flip the Velcro Patches if necessary c. Use a screwdriver to transform both carts into Explosion mode: d. Collide an empty G cart moving at moderate speed into an empty Y cart at rest. e. Only the position sensor needs to be on. f. Show just plots v(t)
Before After
Mass G car 0.30 kg Mass G car (^) 0.30 kg
Velocity of the G car Velocity of the G car
Momentum of the G car Momentum of the G car
Mass Y car 0.30 kg Mass Y car 0.30 kg
Velocity of the Y car 0 Velocity of the Y car
Momentum of the Y car Momentum of the Y car
Total momentum Total momentum
Kinetic Energy of G Car Kinetic Energy of G Car
Kinetic Energy of Y Car Kinetic Energy of Y Car
Total Kinetic Energy Total Kinetic Energy
