4.16 An electron (mass = 9.11 × 10^31 kg) leaves one end of a TV picture tube with zero initial speed and travels in a straight|line to the accelerating grid,

which is 1.80 cm away. It reaches the grid with a speed of 3.00 X 10° m/s. If the accelerating force is|constant, compute (a) the acceleration; (b) the time to reach the grid; (c) the net force, in newtons. (You can ignore the gravitational force on the electron.)