Astone with a weight of 5.29 n is launched vertically from ground level with an initial speed of 24.0 m/s, and the air drag on it is 0.266 n throughout the flight. what are (a) the maximum height reached by the stone and (b) its speed just before it hits the ground

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc