Best material to minimize Impulse?

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SUMMARY

The discussion focuses on identifying materials that can effectively minimize impulse when a car collides with a wall after rolling down a ramp. The user seeks alternatives to foam and sponge, emphasizing the need for materials that can absorb impact while fitting within the specified dimensions of 10x15x15 cm. Key considerations include minimizing impulse (J) and maximizing time (t) during the collision. Suggestions include rubber, gel pads, and certain types of plastics known for their energy-absorbing properties.

PREREQUISITES
  • Understanding of impulse and momentum (p = mv, J = Ft)
  • Familiarity with material properties related to impact absorption
  • Knowledge of basic physics principles regarding collisions
  • Experience with experimental design in physics
NEXT STEPS
  • Research the impact absorption properties of rubber materials
  • Explore the effectiveness of gel pads in collision scenarios
  • Investigate energy-absorbing plastics suitable for impact mitigation
  • Study the relationship between impulse and time in collision physics
USEFUL FOR

Physics students, engineers, and anyone involved in designing impact-resistant materials or conducting experiments related to collision dynamics.

mhz
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Homework Statement


Basically I want to know what material (That I could easily access) would be great to minimize impulse in the following situation:

A car is placed at the top of a ramp with some angle less than 45 degrees and at its front there is a tracker that measures the amount of force put into the car once it runs into the wall. I can add some material/compound to the front with the dimension 10x15x15 cm where 10 is the dimension in line with the length of the car.

(Foam is not allowed)

Homework Equations



p = mv
J = Ft

The Attempt at a Solution



Obviously I know that I need to minimize J (impulse) and maximize t (time), and I've thought of a few materials but I'm looking for any that you may have come across in your life that could help.
 
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What do you mean by foam? Could you use sponge?
 
Sorry, forgot to mention, I'm also not allowed to use a sponge lol.

All I was told was "no foam or sponges".
 

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