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Car Crash Lab

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Define momentum momentum = mass X velocity

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**Materials: Gutter support Two gutters (one long, one short) Stop watch**

Meter stick 6 toy cars Triple-beam balance

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**Roles Recorder Timer Car technician Meter stick tech.**

Find mass of cars Release car (say go) Meter stick tech. Measure distance of ramp Measure distance of crashed car

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**Different Cars with different masses**

Ramp Cars Measure in cm Same Car Every Time Crash Car

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**Different Cars with different masses**

Ramp Car Measure in cm Same Car Every Time Crash Car

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**Different Cars with different masses**

Ramp Cars Measure in cm Same Car Every Time Crash Car

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**Different Cars with different masses**

Ramp Cars Measure in cm Same Car Every Time Crash Car

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**Different Cars with different masses**

Ramp Cars Measure in cm Same Car Every Time Crash Car Which car had the most momentum? How do you know? The distance car traveled the furthest.

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Hypothesis If I increase the mass of car 1 then the distance traveled by the crash car will (increase or decrease) because………….

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Diagram/Procedures: Write on notebook paper or try to squeeze in the space.

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**Data Table: Time (sec) Distance of Crash Car Type of ramp car**

Time (sec) Distance of Crash Car Type of ramp car Mass of ramp car Trial 1 Trial 2 Trial 3 Ave. time Ave. distance 1 2 3 4 5

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**Velocity of ramp car (distance of ramp car / time of ramp car)**

Calculations: Velocity of ramp car (distance of ramp car / time of ramp car) Distance ramp car traveled (cm) (same every time) Ave Time of ramp car (s) Velocity (cm/s) 1 2 3 4 5

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**Find the momentum of ramp car 1-5, (p=m x v)**

Calculations Cont. Find the momentum of ramp car 1-5, (p=m x v) Mass of Ramp Car (g) Velocity ramp car (cm/s) Momentum (g x cm/s) 1 2 3 4 5

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**Conclusions/Questions:**

1. Fill in the following Chart, comparing the momentum of each ramp car with the distance that the crash car moved Momentum of ramp car (g x cm/s) Average distance crash car traveled (cm) 1 2 3 4 5

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