Recent content by 1barcafan

thank you! i love this guy, but i didn't know he had videos on this.

URGENT HELP! cartesian form vector help! Homework Statement given the following vectors, calculate Adotb and BxA. Express your answers in cartesian Form A= +6X-3Y+4Z B= -3X+1Y-5Z Homework Equations The Attempt at a Solution My teacher went over this in about five minutes making...

Homework Statement a 45kg child runs with a speed of 3.50m/s tangential to the rim of a stationary merry-go-round that has a momentum of inertia of 555 kg m^2, and a radius of 2.45m. when the child jumps off, the entire system begins to rotate. what is the angular speed of the system...

Homework Statement A rocket of initial mass of 2.85x10^6 kg is on the surface of the earth. if the initial acceleration is .20g, what is the required thrust? if the fuel is burned at a rate of 14,500 kg/s, with what speed is it ejected from the rocket? Homework Equations The...

thank you for the quick response. actually the table that i have does not have a column for deltaX, the third column is for position/time (m/s) so doesn't that column already give me the velocity? but are you saying for me to construct a (x-xi)/t VS. t graph i have to take the second time...

Help in constructing a "(x-xi)/t vs t" graph Homework Statement I am asked to construct a "(x-xi)/t vs t" graph. from the graph determine th eobject's acceleration. state the equation of the graph and explain how i determined the acceleration. Homework Equations The Attempt at a...