A small car and a large truck collide in an intersection. Which of the following is true? The car's momentum changes more than the truck's momentum does. The truck's momentum changes more than the car's momentum does. The momentum of the car changes by the same amount as the momentum of the truck changes. The answer depends on the initial speeds of the car and truck.
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- 34. Imagine that a wood block is sliding along the surface of a desk. Can the frictional forces involved in this interaction change the momentum of the two-body system thought of as the Earth (including the desk) and the block? Yes, because it will provide a negative impulse to the block. Yes, because it will cause a negative impulse to the Earth. No, because the net force on the block will be zero. No, because there is no net external force on the system.4) You drop a golf ball from a height of 1 m above the ground. It hits the ground and returns to a height of 0.5 m. Your friend makes the following argument: "The impulse Earth imparts to the golf ball as it falls must be larger than the impulse the ground imparts when the ball bounces because the time interval over which Earth exerts a force on the ball is much larger than the time interval over which the ground exerts a force on the ball." Draw one or more momentum bar charts and use them to explain either your friend is right or wrong.19
- A 1500-kg car traveling at 90 m/s toward the east suddenly collides with a 3000-kg car traveling at 60 m/s toward the south. The two cars stick together after the collision. What is the direction of motion of the cars after collision? O 53.1° S of E 68.7° S of E ) 45.0° S of E O 36.9° S of E2. A 5.0-kg puppy running at 2.0 m/s picks up a 1.0-kg stick that is sitting on the ground. What is the momentum of the puppy and the stick after the puppy picks up the stick? Conceptual Physics Reading and Study Workbook UIf an object has zero momentum, does it have zero kinetic energy? A. yes B. no C. cannot tell from the information given
- 11. Please answerAn oatmeal cookie is dropped on the floor. Is this an inelastic collision? Why or why not? It is because the cookie and floor can be considered one object. It is because the cookie and floor are stuck together. It is not because there is not momentum involved. It is not because the cookie and floor do not move away together as a unit.For each of these collisions, can we see that momentum is conserved? Show why or why not, based on your data.
- A green toy car with 0.025-kg mass moves to the right at 0.30 m/s and has a head-on, elastic collision with a black 0.045-kg toy car which is at rest on a smooth, level surface. Which of the following are the correct magnitudes and directions of the velocities of the two toy cars after the collision? 0.025 kg toy car 0.045 kg toy car A) 0.09 m/s, left 0.21 m/s, right B) 0.10 m/s, right 0.30 m/s, right C) zero m/s 0.25 m/s, right D) 0.20 m/s, left 0.20 m/s, right E) 0.20 m/s, left zero m/s"A 1-kg car travelling at 30 m/s decelerates coming to stop in 5 seconds, as a result of applying the break. What is the impulse experienced by the car?" 6000 Ns 18000 NS 12000 Ns 24000 Ns None of theseIf you are flying in a large airplane in quiet air, and a friend across the aisle tosses you her hand sanitizer bottle, what is the direction of the momentum of the bottle as you see it. Toward your friend, plus some downward motion due to gravitational acceleration Toward the front of the plane due to the plane's velocity None. Momentum does not have direction, only magnitude. Toward yourself, and a little downward because of gravitational acceleration downward