A Particle of Unknown Mass Has a Momentum of 73

Multiple Choice

A particle of unknown mass has a momentum of 73 kg · m/s.At a time 7.3 s later,the momentum of the particle is 38 kg · m/s.What is the magnitude of the force acting on the particle during the interval,assuming the motion is in a straight line?

A) It cannot be determined because the mass of the particle is not given.
B) 4.8 N
C) 10 N
D) 5.3 N
E) 9.4 N