Newton's laws of motion

[BIG ACH]

Wait I made a mistake somewhere in my last calculation, anyways I adjusted the values based on the speeds you listed:


So to calculate the force, you have:

[(Mass 1 * Velocity 1) - (Mass 2 * velocity 2)]/Time in which the collision occurs = Force

Mass 1 = 270 lbs
Mass 2 = 155 lbs
Velocity 1 = -10 yds / 2 sec = 15 ft / s
Velocity 2 = 10 yds / 1.7 sec = 17 ft / s
Collision occurs in 0.5 seconds


[(270 lbs * 15 ft/s) - (155 lbs * - 17 ft/s)] /  0.5 seconds = 13370 lbs*ft/s^2 = 1,848.46874 newtons

FORCE OF IMPACT = 1,848.46874 newtons

[dr.chimps]

Wait I made a mistake somewhere, anyways I adjusted the values based on the speeds you listed:

Say they are both running 15 mph...And say the impact occurs in half a second....

So to calculate the force, you have:

[(Mass 1 * Velocity 1) - (Mass 2 * velocity 2)]/Time in which the collision occurs = Force

Mass 1 = 270 lbs
Mass 2 = 155 lbs
Velocity 1 = -10 yds / 2 sec = 15 ft / s
Velocity 2 = 10 yds / 1.7 sec = 17 ft / s


[(270 lbs * 15 ft/s) - (155 lbs * - 17 ft/s)] /  0.5 seconds = 13370 lbs*ft/s^2 = 1,848.46874 newtons

MMMM. Fig Newtons.

[Radical Plato]

[Coach is Back!]

Wait I made a mistake somewhere in my last calculation, anyways I adjusted the values based on the speeds you listed:


So to calculate the force, you have:

[(Mass 1 * Velocity 1) - (Mass 2 * velocity 2)]/Time in which the collision occurs = Force

Mass 1 = 270 lbs
Mass 2 = 155 lbs
Velocity 1 = -10 yds / 2 sec = 15 ft / s
Velocity 2 = 10 yds / 1.7 sec = 17 ft / s
Collision occurs in 0.5 seconds


[(270 lbs * 15 ft/s) - (155 lbs * - 17 ft/s)] /  0.5 seconds = 13370 lbs*ft/s^2 = 1,848.46874 newtons

FORCE OF IMPACT = 1,848.46874 newtons

Wow, ok. Can this be translated into lbs per sq in?

[Coach is Back!]

Do they both lift?   

Of course. It's HS football. The RB is a 420lb squatter.

[sync pulse]

Keep in mind that both individuals will be hit with equal force...

[biff]

Wow, ok. Can this be translated into lbs per sq in?

http://www.unitconversion.org/force/newtons-to-pound-forces-conversion.html

might help

[BIG ACH]

Wow, ok. Can this be translated into lbs per sq in?

Give me a few minutes coach - think I can do something for you.

[Coach is Back!]

Give me a few minutes coach - think I can do something for you.

Thanks. Appreciate it.

[BIG ACH]

Yeah as stated above:

1 848.46874 newtons = 415.552304 pound force which is really equivalent to a gravitational measurement exerted on a mass.

I have not included Pounds/squre inch because I don't know the heights  and widths of those two players  Send me this info and maybe we can come up with some rough estimates.

[Coach is Back!]

Keep in mind that both individuals will be hit with equal force...

How would it be equal force if the RB is approximately 115-120lbs less and is traveling at a higher rate? Seems to be the RB would be generating more power.

[BIG ACH]

How would it be equal force if the RB is approximately 115-120lbs less and is traveling at a higher rate? Seems to be the RB would be generating more power.

Yes but they both feel the same impact.  Regardless if one can suppress the impact (take the hit) more.

[Coach is Back!]

Yeah as stated above:

1 848.46874 newtons = 415.552304 pound force which is really equivalent to a gravitational measurement exerted on a mass.

I have not included Pounds/squre inch because I don't know the heights  and widths of those two players  Send me this info and maybe we can come up with some rough estimates.

Ok, remember this is a hypothetical but the RB is real. He's 5'8 155 and the O Linemen would be approximately 6-6'3 270-80.

[Coach is Back!]

Yes but they both feel the same impact.  Regardless if one can suppress the impact (take the hit) more.
[/quote

Got it!

[BIG ACH]

Ok, remember this is a hypothetical but the RB is real. He's 5'8 155 and the O Linemen would be approximately 6-6'3 270-80.

Ok - I played football in high school, lets get in some other details.... lol

The two players won't be running into each other standing upright...

The O lineman will hit with his shoulder.... so  I need to know what his shoulder measurements are (roughly) and we will only use one side of his shoulders since thats what he'll be hitting with....

The running back will most likely absorb the hit with his abs or waist... so would be a good idea to know what his waist measures... unless he crouches down and delivers a hit with one of his shoulder pads - so then we'd need to know his shoulder measurements.

Give me some rough numbers here and I could translate it into Pounds per square inch for you.

[BIG ACH]

Btw - Its here that they will have different Pounds per square inch values, since their measurements will be different.  We already told you the force generated from that hit, the PSI kinda tells you how each player will absorb the hit.

[BIG ACH]

Actually no, the Pounds per square inch will still be the same, because the impact area is the same size... so your answer will be..... (give me a minute here).....

[BIG ACH]

Sorry Coach - gonna need a little bit more time!

[King Shizzo]

Coach, I have serious doubts that showing some parents physics breakdowns, will land you a client.

[oliolioli]

Coach, a physical demonstration would be much more helpful for the parents instead of all this math and physics.  Just have a normal sized human male bump into you while walking, and since you're only 3'2" you'll fly about 10 feet and this will demonstrate to the parents that their son needs to get on steroids and join your bulking program.

[King Shizzo]

Coach, a physical demonstration would be much more helpful for the parents instead of all this math and physics.  Just have a normal sized human male bump into you while walking, and since you're only 3'2" you'll fly about 10 feet and this will demonstrate to the parents that their son needs to get on steroids and join your bulking program.

Lol!!!!

[HockeyFightFan]

Coach, a physical demonstration would be much more helpful for the parents instead of all this math and physics.  Just have a normal sized human male bump into you while walking, and since you're only 3'2" you'll fly about 10 feet and this will demonstrate to the parents that their son needs to get on steroids and join your bulking program.

Coach....you could always smash your 1974 Pinto head first into an oncoming train at a very high rate of speed to show your prospective clientelle how much "power" you generated and how little the train felt it.

You may learn a thing or two about mass and momentum in the process.

 

[oldtimer1]

You also have to factor in the coefficient of friction at the point of impact for both players. Did both players have a foot on the ground or were in between strides? This is important for transference of power. There are to many variables not even mentioned like leverage due to height and placement of the hit whether high or low. Of all the factors  speed and weight are the most important.

[BIG ACH]

You also have to factor in the coefficient of friction at the point of impact for both players. Did both players have a foot on the ground or were in between strides? This is important for transference of power. There are to many variables not even mentioned like leverage due to height and placement of the hit whether high or low. Of all the factors  speed and weight are the most important.

no, friction is already factored into the velocity, it won't effect the force of collision

[Coach is Back!]

Coach....you could always smash your 1974 Pinto head first into an oncoming train at a very high rate of speed to show your prospective clientelle how much "power" you generated and how little the train felt it.

You may learn a thing or two about mass and momentum in the process.

 

Thats funny, that was actually my first car..hahahahaha. A 74' Pinto