Recent content by Heisenburger

I'm not sure, is it not the same as the start? or do i take into account energy lost before this?

Homework Statement A billiards ball of mass M is initially motionless on a table when it is hit by a cue projecting it forward with speed V and no angular velocity. Find the speed of the ball when it eventually begins to roll. Assume the ball does not slip when it begins to roll. What...

Surely i have to take into account the initial velocity into my final KE value? as the force will have accelerated the particle but it still had the initial velocity to add on? which is why i added the original velocity to the new derived one? just realized earlier on, i meant ADD the initial...

so, do i take the original equation for force, divide it by m (1) and integrate (with the limits of 1 & 0), to get the final velocity? then FIRSTLY take the original velocity away from this new velocity, square that, multiply by m/2 to get KE. Then SECONDLY take the original velocity, square...

shall i leave the KE in vector form? or find the magnitude? and for work do i do vector after-vector before then find magnitude or find the magnitudes and then take away? THANKS!

So, would that tell me the final velocity? could that then be used to work out kinetic energy? what about the work? Thanks!

Homework Statement A particle of mass 1 kg moves under the force F = 5i + 15t^2j N, where t is in seconds. The initial velocity of the particle is 2i + 3j + 4k ms^−1. Find the work done by the force acting on the particle, and the increase in kinetic energy of the particle , during the time 0...