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Name: ID : D ID: Do: ( N) 2310 4 Integral for: Latest Force 8. When comparing the momentum of two moving objects, which of the following is correct? Integral: 2.68 N's A. If masses are equal, the one with higher velocity will have less momentum. B . If one has more mass , it will have less momentum if its velocity is greater . Figure 2 C. If one has more mass, it will have less momentum if velocities are same D . If one has less mass, it will have less momentum if velocities are same . 2 2 24 26 E. If masses are equal, they will have equal momentum regardless of velocity. 2's 3.0 9. In space, an astronaut needs to find the mass of a rock because a scale will not work. 5. A rocket (m = 0.082 kg) is launched from rest with an engine that produces the Force vs Ignore the effects of gravity and air resistance. She throws silly putty of mass 0.60 kg with an initial velocity of 8.0 m/, at the stationary 17.1 m/s Time graph in Figure 2 above. How fast will the rocket be going after it's launched? rock. The two stick together and move off at a velocity of 2.5 m/,. What is the mass of B. 30.6 m / s C. 32.7 m/s the rock? D. 22.9 m/s 2.56 kg C. 5.61 kg E. 1.32 kg E. 46.8 m/s B 7.10 kg 190 kq 10. What is the magnitude of the velocity for a golf ball that has a mass of 0.045 kg and a momentum of 2.34 kg'm/ ? 4.54 m/s 34.8 m/ E. 25.5 m/s 3. 12.6 m/s D. 52.0 m/ Suppose a bullet was shot at a block with some initial velocity (V.). Which of the following Figure 3 11. outcomes would be the greatest impulse for the bullet? The bullet stops after hitting the block and the block moved at 1/4 Vo- A. Om/s 6. Referring to Figure 3, a toy car with a mass of 1.5 kg has an initial velocity of +2.0 m/, at The bullet bounced back at - V. and the block moves at 1/2 Vo- 0.0 sec. Determine the velocity of the car at 3.0 sec. The bullet stops after hitting the block and the block moved at 1/2 Vo. B. 1.8 mm/s C. 7.6 m/s . The bullet stuck into the block and both move off at 1/4 Vo D. 8.0 m/s E. The bullet stuck in the block and neither continued to move. E. 3.4 m/s A child with a mass of 20 kg rides a bike with a mass of 6 kg at a velocity of 5 m/s to the 7. Which of the following (answers A - D) is not a method of determining impulse? If all answers A - D are methods, then select answer E. right. Compare the momentum of only the child with the momentum of only the bike. Change in momentum (Ap) . The child has a greater momentum than the bike. Product of net force and time (EF.t) The bike has a greater momentum than the child. Product of mass and velocity (m.v) Both the child and the bike have the same momentum. Area of a Force versus Time graph . Not enough information is given to determine which has more/less All answers above will calculate impulse momentum. E. Neither the child nor the bike has momentum. m