Recent content by Steve Max

I appreciate and value your help, but I am a little confused with your symbol use. can S1 be the pre-impact speed of veh1 (Bullet). S1 = 10mph can S2 be the pre-impact speed of veh2 (Target). S2 = 0mph S1' = post impact speed veh1 S2' = post impact speed veh2 Looking for S1' and S2' first off.

Thanx! I see you also are a biker. My avatar is my first motor built by my Dad in 1950. he was the Indian Motocycle (sp is correct) Dealer in Tacoma. WA - I was 4.

Thank you for the help. You are indeed on the right track. The formula was offered by a biomechanical engineer and I don't fully understand it. I believe its origin is from a momentum-energy-restitution approach to solving for post impact speeds of vehicles involved in a rear end impact. Veh 1...

An old man (70) that has interest in and frequently uses Newtonian Physics in my work. I have many occasions to push the limits of my basic knowledge. Folks here seem way smarter than I, so . . .

Can someone help me clear up where this formula originates and if it is correct? Has to do with a low speed in line bullet vehicle front end impacting the rear of a stopped target vehicle. S1' (post impact) = (1 + e) X ((S2 - S1) / (1 + W1 / W2)) + S1 S = Speed in mph W = Weight of vehicles 1...