someone pls help!??

6. What is the momentum of a 145-g baseball traveling at 40.0 m/s? 7. Belle plays tennis with a ball that has a mass of 0.0567 kg. Its speed after she hits it is 22.8 m/s. What is the magnitude of the ball's momentum? 8. What velocity must a 1340 kg car have in order to have the same momentum as a 2680 kg truck traveling at a velocity of 15 m/s to the west? 9. A sport utility vehicle is traveling at a speed of 15.3 m/s. If its momentum has a magnitude of 32,800 kg-m/s, what is the SUV's mass