A Ball with a Mass of 50 G Is Dropped

Two balls are dropped from a height of 6 m. Ball A bounces up to a height of 4 m whereas ball B bounces up to 2 m. Which ball experiences the larger impulse during its collision with the floor? A) ball A B) ball B C) They both experience the same impulse. D) It is impossible to tell without knowing the masses of the balls. E) It is impossible to tell without knowing the durations of the collisions.

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