Recent content by proculation

You were right. With a totally elastic material, now you can use m1v1 = m2v2

That's in a Newtonian world. But in a Einstein world... It can't happen.

That's my understanding.

That's exactly what I think. it's impossible. You can't go back in time to receive the signal.

Like blitz.fm said, the momentum (energy) is equal from the 3rd law of Newton if there is no external forces. If you release the force from your hands 0.0001 second before the hit, you will apply the conservation of momentum equation m1v1 = m2v2. That means your golf rod will go back, stay...

Like seto6 said, the acceleration in X is 0. You can find the time that you will need to resolv the Y equation.

Hi, A friend of mine asked me something about relativistic physics. It's all hypothetical and I told him it's a paradox that cannot be achieved since you cannot go back in time. Here's his assumption: Let's say that you pass through a 'wormhole' to a planet near Alpha Centauri (26...

Like I said earlier, the question is not about BP. It's about the pressures and the quantity of oil spilled variable to the depth of the sea.

I'm not talking about the situation but about the physics involved. The pressure of the water which is about 150 atm and the pressure of the oil well. My question is quite simple: does that water pressure help to reduce the spill ? 2nd question: with the same oil reserve at 150m (15 atm)...

So my schema was not so bad :P

Do you want the block to move ? I think no. So: the Sum of the Forces = Mass X acceleration = 0 In X, and in Y. It's call a static state. Since it doesn't move, acceleration = 0. So the sums of the forces must be 0 You separate the forces in X and in Y with sinus and cosines. They all...

You "can" do it that way. But the best way is to go with the 3rd law of Newton: the conservation of energy. Or I may say, the momentum. m1 x v1 = m2 x v2

You're thinking it backwards. Newton said F=MA. You do not want to look for the acceleration. You want to look for the forces.

Hint: 3rd law of Newton.

what is 'accn' ?