Ask anything Thread

[SamuraiBlue]

Someone who doesn't know the difference between momentum and energy shouldn't sound so haughty about telling people to "do the math" ROFLMAO

Come back when you learn the conservation of energy and Newton's laws of motion . I believe they are both taught in high school.

 

[by78]

If you are talking about the amount of energy delivered by the projectile you need to calculate the amount the projectile was traveling multiplying by mass...

What did you mean by "the amount the projectile was traveling"? Amount of what precisely?

 

[SamuraiBlue]

What did you mean by "the amount the projectile was traveling"? Amount of what precisely?

Velocity in meter per second to be exact.

 

[by78]

If you are talking about the amount of energy delivered by the projectile you need to calculate the amount the projectile was traveling multiplying by mass...

Velocity in meter per second to be exact.

Taken together, I understand you as saying K.E. = v * m, where K.E. stands for Kinetic Energy (in Classical Mechanics), v for Velocity, m for Mass, and * is the multiplication sign.

Am I understanding you correctly?

 

[SamuraiBlue]

I believe it's;

Ek is Kinetic energy
m is mass
v is velocity

The sum will be given in joules.

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[jobjed]

I believe it's;

Ek is Kinetic energy
m is mass
v is velocity

The sum will be given in joules.

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What was this about, then?

If you are talking about the amount of energy delivered by the projectile you need to calculate the amount the projectile was traveling multiplying by mass

 

[SamuraiBlue]

What was this about, then?

What about it?

 

[jobjed]

What about it?

you need to calculate the amount the projectile was traveling multiplying by mass for both cases.

Clarify what you mean by "amount". To what property are you referring?

Mass? Weight? Momentum? What exactly is this "amount"?

 

[Iron Man]

What about it?

Stop playing stupid (unless you're not playing) and recognize that you mistook momentum for energy in that statement. Acting arrogantly after making such a novice mistake is humorous at best, tragic at worst.

 

[by78]

I believe it's;

Ek is Kinetic energy
m is mass
v is velocity

The sum will be given in joules.

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But do indulge me and guide me through your reasoning one more time.

If you are talking about the amount of energy delivered by the projectile you need to calculate the amount the projectile was traveling multiplying by mass ...

1) The above statement of yours translates into Ek = Amount the projectile was traveling * Mass, with 'Ek' being the Kinetic Energy (in a classical mechanical system), and '*' being the multiplication sign.

2) You subsequently defined the "amount the projectile was traveling" as "Velocity", which shall be represented by 'v'.

Now, substituting 'v' for "amount the projectile was traveling" in 1), I get Ek=v*m, or the equivalent Ek=m*v, with 'v' being velocity, and 'm' being mass.

3) BUT, you then stated that Ek=(m*v^2)/2, or the equivalent Ek= (m*v*v)/2.

So a pertinent question now arises: do you believe your own formulation in 2), which is Ek=m*v, or do you believe in the formulation in 3), which is Ek= (m*v*v)/2? Which do you believe to be true? Or do you believe BOTH to be true? If BOTH, then might you enlighten us as to how Ek=m*v is, in your esteemed estimation, equal to (m*v*v)/2?

Or are you perhaps foreshadowing a kamikaze solution in lieu of a mathematical one?