Acharged particle a exerts a force of 2.75 n to the right on charged particle b when the particles are 13.1 mm apart. particle b moves straight away from a to make the distance between them 16.4 mm. what vector force does particle b then exert on a

multiple

answer: electrons

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft