What is the derivative of x^2 - x + 3 at the point x = 5?

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

What is the measurement of how fast an object moves relative to a reference point?

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.