The velocity of an object at t=0 seconds is 40 m/s directed due North. The velocity of the same object at t=5 seconds is 30 m/s directed due east.
Find the magnitude of the average acceleration of the object over the time interval from t=0 to t=5 seconds.
Also, show the direction of the...
Homework Statement
A 550.0g bird is flying horizontally at 2.20m/s , not paying much attention, when it suddenly flies into a stationary vertical bar, hitting it 25.0cm below the top. The bar is uniform, 0.730m long, has a mass of 2.20kg , and is hinged at its base. The collision stuns the...
how would that work when the bullet hits the rod at a 90 degree angle? I don't know what I would put for the ω(bullet). Unless somehow I incorperated ω=v/r, but even then I am not sure what I would put for the r?
Iω(initial) = Iω(final)
mv2ω(initial) = (1/3)mv^2*[v/r]
ω(initial) = ?
Homework Statement
A uniform rod of length L rests on a frictionless horizontal surface. The rod pivots about a fixed frictionless axis at one end. The rod is initially at rest. A bullet traveling parallel to the horizontal surface and perpendicular to the rod with speed v strikes the rod at...
Why is it r2 and not r3?
because I thought you would take the integral of mr2 and in order to get it outside of the \Sigma you had to take the anti-derivative which would be 1/3mr3?