Find the fоrce necessаry tо give а prоton аn acceleration of 1019 m/s2 when the proton has a velocity (along the same direction as the force) of (a) 0.1c (b) 0.9c (c) 0.99c mass of a proton = 1.67 x 10-27 kg. speed of light = 3 x 108 m/s.