Copy_of_Momentum_Quiz_-_Honors.docx

Momentum Quiz (Honors) Name ____________________ Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. When comparing the momentum of two moving objects, which of the following is correct? a. The object with the higher velocity will have less momentum if the masses are equal. b. The more massive object will have less momentum if its velocity is greater. c. The less massive object will have less momentum if the velocities are the same. d. The more massive object will have less momentum if the velocities are the same. ____ 2. The impulse experienced by a body is equivalent to the body’s change in a. velocity. c. momentum. b. kinetic energy. d. force. ____ 3. A force is applied to stop a moving shopping cart. Increasing the time interval over which the force is applied a. requires a greater force. c. requires a smaller force. b. has no effect on the force needed. d. requires the same force. ____ 4. Which of the following statements properly relates the variables in the equation F Δ t = Δ p ? a. A large constant force changes an object’s momentum over a long time interval. b. A large constant force acting over a long time interval causes a large change in momentum. c. A large constant force changes an object’s momentum at various time intervals. d. A large constant force does not necessarily cause a change in an object’s momentum. ____ 5. A 75 kg person walking around a corner bumped into an 80 kg person who was running around the same corner. The momentum of the 80 kg person a. increased. c. remained the same. b. decreased. d. was conserved. ____ 6. Two skaters stand facing each other. One skater’s mass is 60 kg, and the other’s mass is 72 kg. If the skaters push away from each other without spinning, a. the 60 kg skater travels at a lower momentum. b. their momenta are equal but opposite. c. their total momentum doubles. d. their total momentum decreases. ____ 7. Which of the following statements about the conservation of momentum is NOT correct? a. Momentum is conserved for a system of objects pushing away from each other. b. Momentum is not conserved for a system of objects in a head-on collision. c. Momentum is conserved when two or more interacting objects push away from each other. d. The total momentum of a system of interacting objects remains constant regardless of forces between the objects. ____ 8. A bullet with a mass of 5.00 × 10 –3 kg is loaded into a gun. The loaded gun has a mass of 0.52 kg. The bullet is fired, causing the empty gun to recoil at a speed of 2.1 m/s. What is the speed of the bullet? a. 48 m/s c. 120 m/s b. 220 m/s d. 360 m/s ____ 9. Two objects move separately after colliding, and both the total momentum and total kinetic energy remain constant. Identify the type of collision. a. elastic c. inelastic b. impulsive d. perfectly inelastic

____ 10. In an elastic collision between two objects with unequal masses, a. the total momentum of the system will increase. b. the total momentum of the system will decrease. c. the kinetic energy of one object will increase by the amount that the kinetic energy of the other object decreases. d. the momentum of one object will increase by the amount that the momentum of the other object decreases. ____ 11. In a two-body collision, a. momentum is conserved. b. kinetic energy is conserved. c. neither momentum nor kinetic energy is conserved. d. both momentum and kinetic energy are conserved. ____ 12. After colliding, objects are deformed and lose some kinetic energy. Identify the type of collision. a. elastic c. inelastic b. perfectly elastic d. perfectly inelastic 13. In 1992, an ice palace estimated to be 4.90x10 6 kg was built in Minnesota. Despite this sizable mass, this structure could be moved at a constant velocity because of the small force of friction between the ice blocks of its base and the ice of the lake upon which it was constructed. Imagine moving the entire palace with a speed of 0.200 m/s on this very smooth, icy surface. Once the palace is no longer being pushed, it coasts to a stop in 10.0 s. What is the average force of kinetic friction acting on the palace? 14. The Chinese giant salamander is one of the largest of salamanders. Suppose a Chinese giant salamander chases a 5.00 kg carp with a velocity of 3.60 m/s to the right and the carp moves with a velocity of 2.20 m/s in the same direction (away from the salamander). If the speed of the salamander and carp immediately after the salamander catches and eats the carp is 3.50 m/s to the right, what is the salamander’s mass?