A tennis ball is thrown into the air from ground level with an initial velocity of 25m/s. a. what is the velocity of the ball after 2 seconds? b. how high has the ball traveled after 2 seconds? c. what time will the ball be at the highest point? d. what is the highest height the ball will reach? e. what velocity will the ball be going when 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