Recent content by jjones1573

I can't edit the post but the mortar is at the origin and the building is 2600m on the positive x-axis from the origin. I'm still pretty stumped with this. I could make guesses at the angle or the distance it lands but I don't know how I could be more precise?

ok thanks.

Oh thanks. Do I need to normalise the vectors or is it fine to just find the two vectors and give that?

Sorry that was meant to be right of the building, where the building is to the right of the mortar origin.

Homework Statement A mortar round is fired over a building that is 2600m away, at an initial velocity of 240m/s. The building is 1600m tall and 100m wide. Calculate the distances which are safe from mortar shells left of the building. Homework Equations 1.) Vy(t) = Vyo - at 2.)...

Sorry I realized this should have been posted in the calculus section would it be possible to have it moved? I think what I have put above for the eigenspace is correct? But what about the eigenvector I can't seem to understand what this is.

Oh yeah that's right thanks. Is it as simple as the vector is: [-8v2] [v2] and the eigenspace is: span [-8] [1]

Homework Statement Im looking at finding the eigenvectors of a matrix but also a basis for the eigenspace A = [ 6 16 ] [ -1 -4 ] lambda = 4 lambda = -2 Homework Equations (A - lambda I ) v = 0 The Attempt at a Solution So with the above equation I get: for...

Ah ok thank you for taking the time to explain this that makes complete sense now!

v = d/t ahh I see what your saying that's why P = F.(d/t) or P = F.V because V = d/t of course! But I'm still confused about the force calculation. if the net force is 0 then the power from the above equation p = 0 * velocity = 0 but that can't be right?

Ah ok thank you. so if the sum of all the forces parallel equals zero then perpundicular forces also cancel each other out then the net force is 0? I am still a little confused.

So If the bike is moving up at a constant speed with a friction force of 320N, to calculate the net force do I simply do mg Sin theta - 700? Also when working interms of km/h do we need to convert to m/s to do the calculations?

Ah ok great!

Homework Statement I'm a bit confused by a question asking me to work out the power of a bike traveling up an inclined plane with a constant speed. I have the mass and friction and the speed but no displacement so I don't know how I could work out power if to find the work I need to factor...

Ah of course! that makes sense. What about in an instance where a ball is moving through the air, how could you measure the revolutions?