FYI: (from shelby)
**i have posted this THREE times now, trying to get it legible. if this time it doesn't work, i don't know what to do..
--DON'T try to use tabs or a bunch of spaces to look like tabs!! anything you try wont work, trust me. it took a long time to figure this out.
--everything you type gets squeezed together, which may not be so bad for paragraphs, but for data it is bad. that is why the data is set up the way it is rather than in nice look charts. it wont let me.
--so i thought i would let you all know before you go and try to do that!
Thanks for your efforts here, Shelby...I wonder what would happen if you try and copy/paste a table from Word or Excel???
-so i just tried making a chart on Word and copying it into here, but that didn't work either...
Data:
Car 1/Car A:
Length: .198m
Weight: 300.9 g
Car 2/Car B:
Length: .189m
Weight: 300.0 g
Scenarios:
One car in motion collides with another car at rest
Trial One
Initial Velocity (m/s)
Car 1 : .1727
Car 2 : 0
Final Velocity (m/s)
Car 1 : 0
Car 2 : .1677
Trial Two
Initial Velocity (m/s)
Car 1: .2644
Car 2 : 0
Final Velocity (m/s)
Car 1: 0
Car2: .2351
Two cars in motion collide into each other with the same speed
Trial one:
Initial Velocity (m/s)
Car 1: .2946
Car 2: -.2916
Final Velocity (m/s)
Car 1: -.2075
Car 2: .2348
Trial two:
Initial Velocity (m/s)
Car 1: .2543
Car 2: -.2723
Final Velocity (m/s)
Car 1: -.2066
Car 2: .2179
Two cars collide traveling different speeds and in different directions
Trial one:
Initial Velocity (m/s)
Car 1: .2285
Car 2: -.0658
Final Velocity (m/s)
Car 1: -.0483
Car 2: .2203
Trial two:
Initial Velocity (m/s)
Car 1: .3554
Car 2: -.1179
Final Velocity (m/s)
Car 1: -.0791
Car 2: .3302
Two cars traveling in same direction, however car in back is faster so collides with the one in front.
Trial one:
Initial Velocity (m/s)
Car 1: .2498
Car 2: .0907
Final Velocity (m/s)
Car 1: .0963
Car 2: .2487
Trial two:
Initial Velocity (m/s)
Car 1: .1040
Car 2: .3184
Final Velocity (m/s)
Car 1: .3217
Car 2: .1071
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ReplyDeleteIs Momentum Conserved When…
One car in motion collides with another car at rest
Yes, we found that momentum is conserved in this scenario.
Trial One
Initial Velocity (m/s)
Car 1 : .1727
Car 2 : 0
Final Velocity (m/s)
Car 1 : 0
Car 2 : .1677
Trial Two
Initial Velocity (m/s)
Car 1: .2644
Car 2 : 0
Final Velocity (m/s)
Car 1: 0
Car2: .2351
From the data in trial #1 and # 2 we see that the velocity of Car 1 is transferred to Car 2. Taking into account that the system is not frictionless these numbers confirm that momentum is conserved. Trial #1 is highly supportive while Trial #2 encounters more error due to frictional forces.
Two cars in motion collide into each other with the same speed
Yes, we found that momentum is conserved in this scenario.
Trial One:
Initial Velocity (m/s)
Car 1: .2946
Car 2: -.2916
Final Velocity (m/s)
Car 1: -.2075
Car 2: .2348
Trial Two:
Initial Velocity (m/s)
Car 1: .2543
Car 2: -.2723
Final Velocity (m/s)
Car 1: -.2066
Car 2: .2179
From the data in trial #1 and # 2 we see that the velocities before and after the collisions support that momentum is conserved. The initial velocities of Car 1 and Car 2 begin at approx. the same velocity (accounting for human reflex/timing and frictional errors which are very slight in trial #1’s initial velocities) switch during the collision and exit the photo gates at approx. the same velocity, again accounting for frictional and human error. In the second trial we see the same pattern.
Two cars collide traveling different speeds and in different directions
Yes, we found that momentum is conserved in this scenario.
Trial One:
Initial Velocity (m/s)
Car 1: .2285
Car 2: -.0658
Final Velocity (m/s)
Car 1: -.0483
Car 2: .2203
Trial Two:
Initial Velocity (m/s)
Car 1: .3554
Car 2: -.1179
Final Velocity (m/s)
Car 1: -.0791
Car 2: .3302
From the data in trial #1 and # 2 we see that the velocities before and after the collisions support that momentum is conserved. The initial velocities of Car 1 and Car 2 begin at different velocities, then switch during the collision and exit the photo gates at different velocities. In both trials we see the velocities switch during the collision, and the fast car becomes the slow car and the slow becomes fast, supporting that momentum is conserved. However, the data is slightly flawed due to frictional forces of the track.