Question

A particle of unknown mass has a momentum of 26 kg.m/s. After 7.3 seconds, the
momentum of the particle is 67 kg.m/s. Assuming straight line motion, the
magnitude of the force (in Newton) acting on the particle during the interval is:

Answer 1

is it (deltaMomentum/time) ?? ~> (67-26)/7.3 OR ONLY 67/7.3 ???

Answer 2

(67-23)/7.3 as it should delta momentum/time

Answer 3

(67-26)/7.3 *