what is the difference between inertia and moment of inertia? b. a particle is positioned at point(2,4) on a grid. will the particle accelerate faster if it is rotated about the x axis or the y axis? assume equal torques are applied in both cases. explain.​

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.