I did all of the questions. I just want to make sure I'm doing them right for the upcoming test.

6. A rocket consumes 48.6 kg of fuel per second. If the exhaust on the rocket is 2600 m/s calculate the thrust on the rocket. 7. What velocity must a car with a mass of 1400kg have in order to have the same momentum as a 2120 kg truck traveling at 26 m/s East 8. A 3.6 kg mud ball has a perfectly inelastic collision with a second mud ball that is initially at rest. The two balls move with a speed equal to one fifth the original speed of the 3.6 kg mud ball. What is the mass of the second mud ball 9. Two gliders at rest on an air track have masses M and 2M. You push each glider for the same short interval with the same constant force F. Compare the final momentum of the lighter glider of mass M to the final momentum of the heavy glider of mass 2M. 10. What happens to the momentum, KE, PE, inertia, velocity of an object falling down a vacuum chamber