# Collision of Two Objects on Ice

hi, I apologize if this question is placed in the wrong area. I was not sure where it belonged. Can someone please help me with the following:

Assuming the ice is very smooth, like that of your standard indoor hockey arena, how much much would an object have to weigh to remain stationary when hit with a 6oz puck traveling 100mph? 75mph? 50mph? and 25mph?

I don't know if it matters, but the object being struck would smooth on the surface that touches the ice, and would be 72 inches wide, 4 inches deep, and 4 inches tall.

Thank you in advance for any and all help you're able to provide! I appreciate you taking the time!

haruspex
Homework Helper
Gold Member
2020 Award
hi, I apologize if this question is placed in the wrong area. I was not sure where it belonged. Can someone please help me with the following:

Assuming the ice is very smooth, like that of your standard indoor hockey arena, how much much would an object have to weigh to remain stationary when hit with a 6oz puck traveling 100mph? 75mph? 50mph? and 25mph?

I don't know if it matters, but the object being struck would smooth on the surface that touches the ice, and would be 72 inches wide, 4 inches deep, and 4 inches tall.

Thank you in advance for any and all help you're able to provide! I appreciate you taking the time!
What conservation laws are you aware of that might be appropriate?

None! Sorry, but I am clueless in this field. I am a youth hockey coach trying to create a tool to use in a drill to help develop young players.

PeroK
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Gold Member
2020 Award
None! Sorry, but I am clueless in this field. I am a youth hockey coach trying to create a tool to use in a drill to help develop young players.

Your problem can only be solved by gathering some data from your set-up and then you can apply some physics. The main factor is how much your object will grip the ice (this is called the coefficient of friction). There is no theorectical way to determine this. You would have to measure this quantity - in the same way that you have to measure the weight of your object and the weight of the puck.

A.T.