a 0.150 bullet is fired at 715 m/s into 2-kg wooden block at rest. the velocity of block afterward is 40 m/s. the bullet passes through the block and emerges with what velocity?

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.

An electron is ejected into a horizontal uniform e⃗ field at a parallel horizontal velocity of v0. assume the electron's initial position x0, initial velocity v0, time t, magnitude of electric field e, electron's mass m, and the magnitude of the electron's charge |e|. ignore the force that earth exerts on the electron. assume the e⃗ field is in the same direction as the initial velocity. part a define the equation for the electron's velocity. express your answer in terms of the variables v0, |e|, t, e, and m.

How much work would it take to move a coulomb charge across a 4 volt potential difference?